does anyone here use them? and if so, which do you use and why? what do you like/dislike about them? how important are they in your studio setup? i've read up quite a bit on how people use them, basically just asking here to get more opinions.

i've been considering getting one as of late. been thinking about either the 01x or Roland SI-24 (because it's stupid cheap, but only has an R-Bus as the digital connection). i'm currently running:

3.2ghz Win XP w/ 1gb ddr
delta 66
sx2.2 + live 4.0
jp-8000
virus b