I like short, slim and/or athletic guys, though will still be more than happy to wrestle down and truss up guys closer to my height if the chemistry is right.
As far as personality goes, I like both brats AND nerds.
Playful, shy, well-mannered, mouthy, quiet...I'm not too fussy in that domain
The one thing I'm truly inflexible about when it comes to the subs I tie up/fool around with, is cleanliness.
That is imperative to me.
Shaved/trimmed beards and body hair. Deodorant. Clean ears, clean mouth, clean clothes.
Those who follow/read my stuff, shouldn't be too surprised.
I tend to stink my socks up pretty bad, but when it comes to the subs in my stories, they're always prim and proper.
The same applies to the guys I "hunt" in RL.