The zoom r16 looks like a good option as does the zoom H2n.
The only think I like about the idea of a mixer over other options is that we have a permanent room so once we have all channels set up and a mix we like, recording each session will be relatively simple because mics etc won't be moved around once in their positions.
The zoom r16 seems to offer this ability with the interface built in, albeit as you say with less channels.
The less messing I have to do on a laptop the better because I haven't spent enough time with the DAW I've chosen (reaper) to be fluent in it's operation, yet.