Of the following, which is the best to replace my old Kenwood head unit in my Classic? (Setup: Infinity 6.5" fronts; Infinity 6"x9" rears, no sub or amp)

Kenwood KDC-W7541U
Alpine CDE-9880R
Pioneer DEH-P6000UB

I know the best thing to do is to listen to each and make my own choice, but none of the local shops stock the above and how they sound like in the shop is not how it will sound in the car.

Have I missed anything off the shortlist?

Any tips on ease of use, USB connectivity greatly received

 

pioneers usually have great options in setting up exactly how evrything sounds from the headunit, most control the high and low pass filters, each speaker, the amp, sub etc. think of it as a clever expensive dj'ing mixer...i dj so im used to them and must have pioneers as they do me good, lol

Ash