[Highland Park] Health club hopping

OK, time for at least one New Year's resolution: get in shape. (Hmm, seems a familiar resolution.) Anyway, this year I AM joining a health club. Checked out Club One in Shadyside awhile back but found it big and busy -- lots of people. I'm looking for a smaller health club, one with all the regular equipment and weights that offers classes, like aerobics etc. Anyone belong to or know of any clubs near our neighborhood? I've heard of one in Aspinwall (I think), but haven't checked that area yet.