I've never owned a parker but my first pse I shot for 11 season before retiring it. Besides normal maintence(strings and cables) I never had to do a thing to my bow. I was happy enough with my first that I replaced it with another pse.

You've gotten the best advice already though. Shoot both and buy what feels right to you. Personally I'm a loyal PSE customer but you may find the parker is abetter fit for you.