Alphacare is like the bargain bin..... cheap and if you look hard enough you might find something that you like.
AC is meant for the shopper that knows what he is looking for.
The big 4 SRM, Allure, Platinum, *** are like Holt Renfrew upscale and expensive.... you are paying for looks and ambiance and quality but once in a while you'll experience buyers remorse.
These places are good for guys who don't know what they are looking for because on average you'll have a good time.
Pickering Angels is like the outlet mall. A longer drive but worth it sometimes if you know what you are looking for. But in fairness I usually only venture out that way if there's a MPA that I know from a previous spa (e.g. Victoria, Shawna (retired?)).
Body and Soul is like Winners better prices but a wider range in quality you might find some average girls or you might find some great girls (i'll cite Crystal (Studio 9 now), Cecilia (hiatus) and as some of the all time greats).
But at the end of the day I tend to pick based on the girl not the spa.