[blackbirdstudio]

Hi Harry...
All this is with price in mind.

The 192 interfaces can have either a 16in 8 out analogue config, or a 16out 8in analogue config.

If ya need to record a full band, probably the 16in option is the go.
If im right, the o2r has 8 pres in it, and no direct outs, but you could use the insert points for an unbalanced output from each channel, which should be sweet in most cases.
8 more pres, ontop of that, and i reckon thats a pretty good start. Just a cheap mixer will do.

The 192 has a digital card built in with 8 in and outs ontop of the analogue ones i mentioned before, so with a converter attached their, thats 8 more.
There are some cheap converters out there that will do the job, lots with pres on the front end too.

Hope that helps
dave