It does not matter to most, but I think pool-x is the best looking pool out there too. :-)
I don't care much about the aesthetics. I'm using Pool-X for everything else. But I admit it looks good too.

Oops, my inexperience is showing.. the UI of pool-x that I like is a result of using
mmcfe, as credited on the pool-x web site. But I still do prefer the efficiency, fair payout system and fee structure aspects compared to the other pools out there.