I like these tight, kinda.  The first few times I wore them, I especially liked the support on my lower back.  I row so get a pretty deep bend in the knees.  I have big calves (I'm not overweight), and the bottom of the 3/4 length was really bugging me after a while.  I haven't worn them since for rowing, but may try them again for another sport, or just give them to my daughter.  So just beware if you have large calves.  I suspect if I didn't have these calves I'd probably love these tights.