I've been thinking about picking up a R-44, but this looks pretty inviting.
I know most of the time I will only use 2 or 4 channels, but I like the option to run 2 channels of mics, 2 channels of SBD mix, and still have 4 channels left over for individual feeds from the board or maybe even on stage mics, etc. The many possibilities would be really nice.
Another nice option would be patching a few extra sets of mics in a larger TS (like Red Rocks) so I can pick and choose what sounds the best (maybe as a combo mix or just the best stereo source).
Hopefully the tax man is nice to me this year!