It really depends on your goals. If you have a sedentary job and just don't always want to be the weakest person in the room, something like stronglift's 5x5 o

It really depends on your goals. If you have a sedentary job and just don't always want to be the weakest person in the room, something like stronglift's 5x5 or simply starting strength will get you way more bang for your buck (and time). I've been doing starting strength for about 14 years now and I can bang out a session in 30-45 minutes.