the alpine is definitley the most expensive and the best fit. however, everything is prewired for the alpine units, so any other radio will take some additional wiring. i have to check with my scosche and metra reps regarding fit for the raptor.
Fred- in my opinion, i prefer the sound quality of an alpine, but prefer the nav of a pioneer. i have never been a fan of alpine navs. but they do have better sound quality. that being said, the difference in sound quality between the alpine and pioneer is smaller than the difference in nav ease of use between the 2. pioneer has much better functions with the nav, but a little less sound quality. thats why i went with a pioneer. i have the avic z140bh.
im not saying that alpine sucks, its completely opposite, they are vey good. i just prefer to use a nav thats easier for me. i would go to a shop and check out both the alpine and pioneer navs and see which one works better for you. you cant o wrong either way.