I'm learning to love my new treesaddle; let's me get in trees I wouldn't have before, offers way more shot angles than a conventional stand, and I think the deer see you as just another "fork".
Out of it and conventional stands, if I can't have both cover in front/behind, I'll take cover behind me over cover in front of me any day. Around here, human outline skylined will leave you with an empty freezer every year and that cover behind you helps whatever camo you use work that much better at breaking up the outline.