I have used CO's Embraer 145 Regional Jet and I find it tremendously better than the "rivet rattlers". The 50 seat jet has seating for 1 on the A-side and 2 on the B-C side. I found the seats a little more comfortable on the B-C side. Especially the aisle. Also, the bulkhead seats offer more legroom. The overheads are somewhat small.