Anyone using a Mac Pro with just an HD1 Acell card? Good?

[Allbaldo]

In pondering my next upgrade, I started to think that maybe now that Mac's are so much more powerful than before, and that RTAS is available for aux channels, that maybe one could have an excellent system using just an HD1 Acell card with a Mac Pro. Is anyone out there using a system like this? How does it work for you?

I record rock bands almost exclusively, so I wouldn't be using tons of software instruments, but I do a fair bit of recording live bands using a lot of channels at once. I mix ITB, so I'd still need to be able to use a lot of plugins. I'm mainly using McDsp plugins, which are pretty DSP friendly, but I want to make sure I've got enough juice. What do you think?

Thanks for any/all responses!

Stephen