these are all great suggestions.
my husband and i both have memberships to 24 hour fitness...if you have a family its nice because they have a "kids club" that provides child care so we can both workout at the same time or for me, in the mroning while he is at work

also since we travel a lot its nice to be able to go to a gym wherever we are...gyms will sometimes help to movtivate people...one you paid for it, 2 you get to know people who expect to see you ther everyday and you can meet friends (for example today i forgot my ipod and it was my running day, luckily a few of my friends were there and i was able to run hold a conversation with them for the whole time thus making the time fly), 3 you can learn how to do things correctly (ie 24 fitnes really promotes training which i things lessens intimidation esp. in women first starting out0 4) they have awesome classes your wife might dig, too
good luck in your search...i think finding a perfect gym is liking finding a perfect home church...you just hafta know what you are looking for and feel welcome so youll continue to go--if you dont go what benefit is it to you?