As a complete newbie to sequencing, Midi, and computer music generally back in 2007, after doing a bit of research I was completely torn 50/50 between Sonar & Cubase.

PT was prohibitively expensive, and at the time was Mac only, which was a non-starter seeing I've been a pc guy since forever. This also ruled out Logic & DP. The other packages at the time seemed a little low on feature count.

So I then did a LOT of research into the 2 packages and, believe it or not, the deciding factor came down to the existence of this very forum, unlike Cubase which as we all know, is a bit of a minefield at best.

I think I made the right choice 

I upgraded to Sonar 2 from GT Pro when I decided that I might be better using MIDI keyboard parts rather than audio.

because they dont need notation also djs......

Midi synths easily programmable from a staff view, 1/2 way decent drum kit makes all the pre-production for a guitar based album quite simple. It was also the first DAW I ever got exposed to years and years ago in a pro studio. Here I was on a Tascam Porta-01, and this studio is all being run in Cakewalk Pro Audio, and I was in awe. Couldn't afford it myself then (and my first DAW of my own was actually PowerTracks (bleh). Once I landed myself a copy of Music Creator 4, though, Cakewalk owned my soul. Went on to 5, then 6, then X1 Studio. Aside from the occassional bugs, I'm pretty happy with it, and the workflow, to me, just sits well with me. I don't know if it's true that it's truly the best choice for guitarists or not, but since PT is way way out of my price range, and X1 does a great job with my guitars.. it's the right choice for me.

As a guitarist all I can say is I bought it because it touted full audio recording capabilities, really good mixing/mastering options with a hefty dose of MIDI stuff and SD3 to round out my tunes. I looked at pretty much everything currently out there and Sonar was the one for me. I could essentially produce an entire album with just my guitar/bass (and with the MIDI bass options the bass isn't necessary), an interface and a couple of mics for vocals. No fuss, no muss. Also it was WAY cheaper than anything else out there that does the same thing. Ableton? That ain't for rock dinosaurs. Reaper? Cheaper but weird and extremely basic. PT? I hate everything about PT based on principal. Nuendo? Can't afford it. Logic, Reason, Cubase? Well I don't have a Mac and the others just didn't crink my crank and didn't offer as much for the same price. YMMV.

I play guitar, but do electronic music. I feel so lost! 

I'm a guitarist, but I got bored with that and seen other artists producing music that was selling well using sound samples and synths. So I ventured into the world of midi with Opcode's Vision program. Once Opcode shut down,  I came to Guitar Pro, then later to Sonar because of it's midi capabilities and have not been disappointed. For a while Cool Edit/Audition was my music production tool but it didn't have midi capabilities. Adobe tried adding midi to AA3 but it didn't work out well and they dropped it, now calling themselves a editing only program. Sonar is a full fledged music production program that works for me and doesn't cost $600. Plus it comes with loads of bells and whistles which make it a great bang for the buck program. There's plenty of dirt cheap alternatives out there, but I feel it's worth paying a fair price for quality program. You get a lot for your money.

I'm primarily a guitarist and I use Sonar, so I guess the hat fits.
I started out with the Roland Micro composer MC8 which pre-dated MIDI.
When the Atari 1040ste came along it had MIDI so we bought into the Notator system, which along with Uniter and combiner ran everthing from our synths to tape transport... I hung on to that sucker until Windows 95 came out when I tried a few different software packages that had been ported over from the MAC (Cubase and Logic from memory).
Cakewalk had been designed from the ground up as a Windows app and it just worked out of the box. The others had hassles (for me anyway).

The issues I had with Cubase have long since been sorted out as we use Nuendo here on one of our workstations without issue.
But Cakewalk is a personal favourite as I championed it when it was uncool to run what was perceived by my peers as a "toy" app.

Today we run a professional studio publishing game audio to some 39 countries with Sonar as the main audio app.... so I guess the last laugh is mine.

Cakewalk + PC offered one of the least expensive ways to get into audio-based hard disk recording back in the day. Some other DAWs had really great MIDI implementations, which was fine for keyboard players, but not so much for guitarists.

When I was writing "The Guitarist's Guide to Sonar" I was struck my how many "guitaristic" things there were that I'd sort of taken for granted. The Sonitus modulation effect is a great guitar effect, and being able to derive envelopes using the Analyzer is really helpful for filters and such. Being able to restrict highs in the Sonitus Delay's feedback loop makes it easier to get more of a "Memory Man" type of sound. Also I can get a great wah sound through the parallel parametric/"throw one out of phase" trick.

I will say PT with an Eleven Rack is pretty cool because you can edit Eleven Rack within PT, but no other DAW. However, Eleven Rack works great with Sonar, and once I have a preset the way I like, I can do any tweaks I want from the front panel. I wrote an article for Harmony Central  about how to use Eleven Rack with just about every program except Pro Tools

LOL..........

because they dont need notation