I think it just comes down to a combination of your personal taste and clicking with an open-minded and friendly MPA.
I've had a taste for, and clicked well with:
Claudia @ HFH
Stacy @ Plat. (formerly HFH, formerly IT)
Amber @ HFH (formerly IT, don't know where she went to now - is gone)
Adrianna @ Pickering Angerls (Formerly Plush, Allure, IT)
Sara @ HFH
I have found that when MPAs are at Allure, they are generally more restrictive. Although I've seen several ladies at SRM (Monica, Olivia, and this Aussie girl whose name I can't recall), something just hasn't clicked for me there. Haven't been to Utopia in years.
I know there's some guys who have only one taste and stick with it and always look for that particular type. Some, like me, have wavering tastes. Some days I want a super-tall model-type blonde, some days I want a short, fit, big-titted brunette MILF, some days I want a sporty little Asian, some days a tall ebony model. I'm all over the map, but I'm sure I'm not alone....
This week I plan on visiting a spa in Hamilton (King-Sherman Spa) because I saw a 5'9" tall slim Asian on their site.
And so the adventure goes on....