Just from experience, I wouldn't suggest going with Dual. I bought an XD6150, and it arguably has worse sound quality than the Delco originally in there (just overall quiet and very weak bass). But it does fit!
I've also noticed some problems with the tuner - it's not very strong, and a lot of stations that used to come in quite clear now have a lot of static. I can only hear them clearly when standing still, which isn't that helpful. I've noticed similar things in reviews on the product you've mentioned.
