SamyMerchi wrote:
I think Phoenix Rising + X-Factor #2-8 would make a lovely thin OHC.

Also, Excalibur. Alan Davis' solo run would be nice in an Omnibus, but before that is slightly problematic. With all the specials, up to #43 is probably not going to fit in a single Omnibus, but breaking it in two would almost certainly mean breaking in the middle of the Cross-Time Caper, which is bad.

Can't believe I forgot Excalibur.

And I agree it's a though one to do in 2 Omniboo. Maybe cutting the first Omnibus at #36 and starting the Alan Davis one at #37 is doable if space is the issue. Not ideal though.