I went the other way...started with BFD2, too much tweaking and too much power for my stupid and lazy ass.  Now it is all EZ Drummer and AD2.  Easy peezy, lemon squeezy.  Any tweaking I do is with pro-channel.
 
I still occassionaly will use BFD2 for cymbals, because nothing I have ever heard compares to BFD for cymbal decay etc.  But that is rare, because that is extra work, and like yorolpal....I am lazy.
 
Just bought groove monkee midi on sale and it has mappings for all the drum programs.  Quite nice.

I think it's worth mentioning that EZDrummer2 (AKA 'Inferior Drummer' by me) does not allow remapping of the MIDI notes assigned to kit pieces.  I believe that this is the only drum sample player in the known universe which does not offer this functionality (Toontrack indicates that this is only available in Superior Drummer, of the products they offer).
 
I've also noticed some unusual behaviour in EZD2, for example, bringing 3rd-party MIDI files (from oddgroooves in my case) into the song-creator pane can sometimes cause them to play at double-time, depending upon the order in which MIDI files are dragged in (i.e. sometimes they play in correct time, sometimes in double time).  As the MIDI files themselves are not changing, this points to a BUG in the EZD2 software.
 
If I'd known beforehand about the inability to re-map kit pieces (more fool me for not doing my research properly), I would have not touched it.  However, I've almost completed writing a TCL script which will do bulk MIDI file processing, recursively across a folder hierarchy, transposing any arbitrary set of notes to new values, writing the modified MIDI files back out to an identical hierarchy in a user-defined location.  This may perhaps be of some use other than working around the limitations of EZD2.  Once I finish it off and have thoroughly tested it, I'll give folks here the heads-up.

ston - your script sounds very cool.  FWIW much to my dismay, EastWest Pro Drummer also doesn't allow remapping of notes.  I find it crazy that no reviews have mentioned this.  I wrote several times to their support who don't seem to think this is an issue.
 

My favorite Drum Kit sound I've gotten is actually from a program called Drum Core.  
 
Drum Core 3 only works in 32 bit though, and it seems Drum Core 4 is still in beta testing for some of the versions.
 
With the right kit and some manipulation, I seem to prefer AD over the Toontrack offerings in general.  
 
I'm not sure any of them offer something really better for the editing side of the workflow.  I imagine you will still edit the tracks in the midi view just the same, but I could be wrong.  

I have produced songs with AD2, SSD4, EZD2, SD2, NI (Abbey Road) and BFD2. 
 
I find them all acceptable given that sometimes I bounce between two or three of them looking for "the sound" for the tune. I'm a preset/tweak guy.

NeoSoul
My favorite Drum Kit sound I've gotten is actually from a program called Drum Core.  
 

It use to be my go to. I had problems using it in the 64 bit environment, but something happend (JBridge update is my guess) and I found it was working again. I will still call it up occasionaly for some of the more unusual kits, particularly for the Luis Conte precussion. Some of the MIDI is very good, I like the Alan White stuff but its in a propriatory format so can only be auditioned in Kitcore / Drumcore. It can be draged into a DAW MIDI track for use in another program if required.
 
BUT - when Sonoma Wireworks started takeing pre-orders TWO YEARS ago I signed up for Drumcore 4 lite as a 64 bit player for my existing content and a bit of new content. So far all I have had is a rather nice 40's kit as a sweetner, there is still no sign of a comercial release of Drumcore 4, though there have been some Mac beta versions releasd.
 

bapu
NI (Abbey Road)
 

I always overlook this one. I don't have all of them, just the ones in Komplete. They are very good and should be at least looked at by the OP.
 
NI's Battery is another I hardly ever use. I find the interface confusing.  But if you are looking for a more electronic sound it is very powerful.

AD2 is easy to use and sounds great but BFD3 takes things to the next level.  Using BFD3 with Evil Drums has me in virtual drum heaven :)  Really natural sounding drums and all the tweaking you can imagine - but you don't necessarily have to tweak anything and they sound great.  I actually love the control over the drum sounds that BFD3 gives you - bleed, resonance, etc. but straight "out of the box" they sound better to me than AD2.

I use both Superior Drummer and AD2. My Genres are so diverse that I like the flexibility.
 
Walt

BFD3 for me every time but I'm biased
 
There are demos of most of them (apart from super drummer 2) so my advice would be to try them all.
I see the EZdrummer demo only lasts 10 days so don't be like me and download it and then hardly use it.
 
All demos will have major limitations compared to the full versions but you should get a good idea of how they sound and how intuitive they are for you.
 
People say that BFD3 is the most complex but I don't think that means it's harder to use, but the fact is it does everything the others do in pretty much the same way so if you just want to load some presets, play some grooves and not spend too much time tweaking, guess what? BFD3 can do that too
 
So to some extent it's how you use it. That said if that's all you want to do with it it's a bit like having a top of the range Ferrari and just driving to the shops once a week.
 
Steve