if you have the budget for diva, dont hesitate to invest in the dmssr. its an incredible bargain that offers a truly superb performance at a price you wont regret. but before that check out the korg dm-series drum machines . my two favorites are the dm-100 and dm-50. together they are a superb drum machine duo (for now, until korg releases the dmp-5000!) and about one-eighth the price of diva.
most of the time, if i didnt understand the synth, i didnt think diva was that accurate. the controls are mostly straightforward with a choice of oscillators, filters, envelopes and modulation, but the variation in sound from one patch to the next made me take a few extra steps to understand what was going on behind the music. typically, each step of the synth in diva will be explained in the help file so readers dont need to have a background in electronic music to be able to make immediate choices. the provided help will also give you a good idea of the types of sounds diva can make, and ways to sound modify them. if you dont want to read that, consider buying a synth from the library of sounds u-he provides at www.u-he.com/synth-selection/dive instead.
the feel of diva is that the synth tries to make you feel more confident about its capabilities than the typical synth. its virtual analogue contours always sound like they should and not that they are morphing to how you do them. one thing that does feel different is the temporal interpolation which isnt a fault with diva, it is just a different approach to interpolation. i think it is a welcome addition to the diva sound.