I've always liked the bulkhead window seats the best, enough legroom (just barely on the CRJ), nobody reclining into your lap, ability to use the computer without the screen getting jammed by the reclining seat in front of you, the ability to get past your neighbor(s) without awakening or moving them (although on the CRJs you have to watch your head), the half tray only for drinks in Y, tray not attached to the seat in front of you. Besides, even the exit row seats on the CRJ don't offer much, if any, more comfort/room. To me the ideal bulkhead window seat, in Y, is the bulkhead exit rows like that on the 757s.
Wow, amazing how perceptions differ. You see that as heaven, I see it as a corner of a shoebox w/ no room to breath let alone move a tiny bit.