My hard drive failed.  My tech guy said the best one to get would be a

500GB Samsung 840 EVO


 
Any reason that would NOT be the best for Sonar?

 Corridors, welcome to the forum! . . . can't see why not . . . 500 GB SSD drive, fairly deluxe, hope you've got a good audio interface to match with it !
 
Have you run Sonar on an SSD system drive before ? Do you use other separate drives for samples etc . . . ?
 
In my neighbourhood, a 500 GB SSD drive is a lot to spend, and my 120 GB SSD system drive does very well for a lot less, and myself, personally, I would spend that money upgrading my audio interface.

That drive is decent, I have one for my data drive on my new daw.

That drive is decent, I have one for my data drive on my new daw.

I haven't tried a solid state drive for data but I am using one for the OS.  (and yes, for me, the OS and the data reside on different drives).  The computer boots very quickly and shuts down quickly.  I've not had any issues that are close to show-stoppers with the 1 TB standard eSATA drive I use for data.

I have 2 EVO drives, 1 in my laptop and 1 in the desktop. They are 240GB SSD and run great. For my desktop the drive is for programs etc, while I have a 1 TB "old fashioned" SATA for samples and data. On the laptop the Samsung gets everything. I'm still a tad bit leary of using an SSD for data because I've read that excessive data transfers can shorten the drive's lifespan so keep that in mind.
 

I bought one of the 512 GB SSD's when they first appeared, and they were around $700 or so, as I recall it.
 
The particular one I bought failed after less than 6 months, so I ripped it out of the computer, got store credit for the return (I had an extended warranty).
 
I then used the store credit to buy a shiny new 46" HDTV and 2 regular non-SSD SATA III 2 TB 7200 rpm drives, and some Swedish fish candy.
 
While the SSD drives boot up faster, and access data quicker, I found I got a WAY bigger bang for the buck with the above listed gear, and the SATA III 7200 rpm drives I use are PLENTY fast enough for everything I do with Sonar.  As I am disabled, I am able to spend about 10 hours a day in Sonar, or otherwise working on music activities, and I have ZERO performance bottlenecks with using the regular SATA III drives.
 
If you have all the cables, plugins, and such that you need, then by all means pick up the SSD drive.
 
If the above is not the case, then I suggest you consider picking up a 1 or 2 TB regular 7200 RPM SATA III drive, or even 2 of them, and then take the savings ($120-$140ish) and look at beefing up things like main memory for your computer (perhaps go from 8 GB to 16 GB, or 16 GB to 32 GB), or take advantage of some of those end of the month sales on effects or synths or sound libraries you see.
 
If I had an extra $120-$140, I would give serious consideration to picking up East West Quantum Leap Solo Violin (currently on sale for $99), or some other synth component.
 
Anyways - I am glad you have some choices - an SSD drive would be a nice thing to have.  Balance the speed improvement against getting half as much storage for the cost, and against getting a regular SATA III drive and some extra gear or a synth for that same cash outlay (and having twice the storage).
 
Bob Bone
 

The EVOs are very good. I buy a lot of them at my job and put them in some servers, desktops and laptops. Bob Bone makes a valid point on the necessity of SSDs from a cost-ratio point of view, but I like SSDs in my system because they are smaller, don't generate heat, do no generate noise AND have better on average read/write times.
 
Those models are under $300 for a 500GB right now. 

And I thought the whole point of them is there are no moving parts,, so one would expect they cannot break. Was interesting to hear that yours did Bob. Oh well, I can't afford them anyhow.. 1 TB Samsung 7200 drives  $56 Can. I can buy 6 of them for the price of  SSD. 

And 6 of those drives would make a crap-ton of noise.