It really depends what you are after. ESPH in LL is probably the coolest in terms os set-up and class offerings. This is reflected in the price as it is also the most expensive. Fusion gym in East Dulwich rd is a good all-rounder. When the gym part finally opens up in a few weeks it looks like it will be very good. You can get a membership that covers all Fusion gyms in the borough (including Brockwell) which is worth it if yoy think you will use the others. In order to use them all you have to join at Brockwell which is slightly more expensive, but still under ?50 pcm which isn't too bad. There is a smaller gym at Dulwich Hamlets football club next to Sainsbury's which is ok, a bit cheaper but not as big. Suffice to say that there is enough to choose from in ED, you just need to decide what you are after and how much you want to pay. My preference has always been Fusion ED as they open until ten week days and 8-5/6 weekends.