IMHO the ProSelect is the better choice. It has much better quality construction for its price. I have heard others here lately reporting problems with Purolators. Wix makes ProSelects to meet Napa's specs and Napa is not going to put their good name on an inferior filter. I use the ProSelect and it works great for me.
I've used the last two, and would use them again. I know Supertech is a Champ filter, and since they make AC filters, I'd use it but would look for a Napa filter first then a Purolator.