Speedsportz Racing Park

Looking to get more seriously into karting. Will buy a kart eventually if I can, but for now I’d have to stick to rentals. I’ve heard that Speedsportz is the best rental league in Houston. Does anyone have any experience with it? How does it compare to MSR Houston and Houston Karting Complex?

Should I stick to just one league or go for MSR and/or HKC at the same time?

Thanks.