My two fives are both divided in half and I've had fantastic luck with them. When I set my first one up a couple years back I had a little trouble getting in and cleaning it, but after picking up a smaller siphon I haven't had any issues since.
I suggest doing a DIY Divider though, like so: http://www.tropicalfishkeeping.com/d...ividers-21866/
Easy, cheap, and much sturdier then those flimsy store bought dividers. I suggest doubling up on the craft mesh though, it keeps it a little straighter and sturdier and your fish won't be able to see each other QUITE as well IME.
Best of luck! ;)