I liked monk for 4-5 previous seasons and this season went wizard. Pretty fun and takes a while to learn to play after being able to tank a bit more damage (that 35% less damage that monks/barbs/crusaders takes is finally noticeable ) and almost can take T70 now after optimizing gear a bit.
That being said... I like to mix it up and if I roll a 2nd character on a season (hopefully with a quick power level from a clan mate), I usually roll a character with different stats than my main guy (monk/DH agi, wizard/wd int, barb/crusader- str). I would roll a crusader or barb as the whirlwind set and hammerdin spec (sader) both seem interesting to me. If not sure still, I'd recommend watching soem of rhykker';s 2.5 build guides and seeing which playstyle peaks your interest.