Fast Track Ultra or Keep Mbox 2 USB?

[Mr.R23]

Should I keep my box 2 or trade it in for the Fast Track Ultra? I heard some complaints about the Fast Track, so I'm kind of skeptical. By the way, here's what I have going on in my setup:

-XP SP3 with a i7 PC
- 3 Keyboards (3 Stereo Outs)
- I will be using some CPU eating Vsts as well such as Massive from NI and some EastWest Plugins, so I need a interface that can run at a low latency.

So far the mbox 2 is good (Not going to say the audio quality is the best, but then again, I have to use my ears in order to get a good mix). The only limitation is I record 1 track at a time stereo, and I was thinking the fast track would speed up the process.

But then again, the mbox 2 actually WORKS (no computer issues). And I was hearing the fast track had irq issues, and ... and... so Idk. I sure wouldn't want to buy it, and have static pops and clicks, and etc. So I wanted you DUC'ers before I trade in my mbox 2, and invest in Fast Track Ultra.