Planet Fitness or Chuze Fitness
I too was a member at 24hr fitness and it recently expired. Even though I enjoyed it I changed to Planet Fitness. I used to do the classes at 24 but after being sleeved I am very reluctant to burn that many calories at a time. Planet Fitness is less pretentious and I enjoy the atmosphere better. There are no power lifters there giving you that look or making you feel inadequate. The staff at mine is very friendly. There is a persona trainer there too that doesn't cost any extra. I also love the Hydro massage that PF has. That is something you don't get at 24.
Go visit one and take a look before you decide.