Yes as Jim Said, DPC is rock solid for me. Just ear and feel, haven't tested yet. But I'm def doing 64 samples of FULL sessions loaded with crap, and Vista gives 1 or 2 crackles depending on what else I'm doing on the machine, or how I seek and play. I can live with that, since I can bump up to 128 and ROCK SOLID stability is there. About the 7 Driver issue, I had to jump down to Vista 64 and all is well. I'm still running XP, cause I have a lot of work to finish, but I know 7 or Vista is next up, just gotta find a way to port over all my plugins with MINIMAL work. FWIW, comparing Vista to my Mac, I'd take Vista. I want to ditch XP, but I have 4 HD, of about 2 TB to sort through, and I'm not about to dump my perfectly working OS anytime soon. I may image my XP build, since I know that works flawlessly, but man, time!