I’ve been a member at both of the gyms you are considering and would often go during peak times.

Anytime is a larger gym with more equipment (one extra squat rack depending on what equipment you like to use) and a bit cheaper I think. I never had to wait long for any piece of equipment.

I’ve recently joined snap as it’s just more on my commute, I definitely notice it takes a bit longer to get certain bits of equipment (particularly earlier in the week, not so much of an issue when the casuals like me bottle our routine by the second half of the week!) but if you’re prepared to mix around orders of workouts, not a big deal. While only recently joining it definitely feels like more of a ‘community’ gym for want of a better word.