The locker room is ok, location is good. No parking which is a problem for a lot of people. The equipment could do with an upgrade. It's around 400 or 500 a year afaik.
The Mardyke is my favourite, good range of equipment, pool, squash courts, classes, sauna, steamroom etc. I pay €43 a month for a gym membership there, it's €56 a month for gym + pool. Direct debit.
The downside of the Mardyke is that during the college term it's just so full of complete idiots, people doing 10 sets of 30 on the bench etc in groups of 3 or 4. The staff are grand in there but they really need to get on top of people with no gym etiquette (example, a guy wringing out his soaking shorts in the changing room, instead of the shower, or the sink, or the toilet, or over a drain) and someone walking through the steamroom area and spitting on the floor. that all happens very infrequently but the students definitely make it a less attractive place to train.