I first tried programming drums from Soundfonts...bad idea...Then had heard so much about the Dr008 from word of mouth that I had to give it a go. I've never looked back since. It's incredibly easy to use, with the latest update integrating with Sonar's Drum editor view you'd nearly have to try to get something wrong. Earlier versions have given me some stability issues when on very complex projects although I haven't had any problems since updating to 1.11 . There is now a huge library of kits available free to registered users (over 600mb and growing), aswell as a number of commercial kits for purchase.
The few times I've had to contact support the response has been very quick and always on the mark.
To be honest I haven't tried any other drum synths, but thats just because I've never needed anything (yet :) ) that I can't find in the Dr008.Read Review