using X1 Expanded with a Motu 828 Mk3 hybrid on Win 7 64-bit here
the MOTU with my system is rock-solid, i cant recommend it enough, ive had no issues at all with it and ive had it about a year and use it almost daily
plus the latest release of the CueMix software now supports TouchOSC
depending on your setup
this may also come in handy, kinda pricey but i just love the thing, if you call Musicians Friend and Sweetwater, qoute em each others prices on the MOTU 828 back and forth, the salespeople will work with you to get you a bottom price, do that and you may save enough to get the LevelPilot as well