Looking to buy an xfi soon and trying to figure out which model (for use with my z680's for the most part), on occasion may connect to an onkyo ht-s780 system. Trying to deside between music/pro/fatality the platinum is out of my budget. I am guessing the pro is the correct model, but the 64megs of ram on the fataility could be interesting (depedning on the level of programability I might be able to use the xfi for some scientific calculations in a similar way to what is currently being done with graphics cards, though I havent realy looked into that yet so I could be wrong). Any suggestions would be appreciated (and I have a 25% off amazon coupon so that brings the prices a little closer together.