Just wrote a long winded reply, and the fucker didn't save in. Don't have time to write anything else, but to just give a few lines from the huge post I just lost....
I have a mackie 16-4 and I love the thing. I use this with my old desk to have a total of 32 tracks. You having 8 busses will give you nice options, but heading into the computer you will be wanting more, so you will end up bouncing out often anwyay. Where the huge I/O of that sound card will help, is when you want to mix down. I bet that you know already... Can't beleive I lost that other post.
Oh well.