Mayhem Programming

I’m moving and have two options for boxes. A: uses mayhem programming, serious athletes B: in house programming but most members only go 1-2 days a week (and it’s 30 more a month). A seems like the right option for me, but I’ve heard complaints about Mayhem’s programming. I’m in my late 40’s, still wanting to improve but also wanting to keep my joints in tact. Thought?