Hi Grim,
I was looking at something like the Clarion CMS1 (
http://www.amazon.com/Clarion-CMS1-Source-Commander-Port/dp/B001OQ6OA4/ref=wl_mb_wl_huc_clickstream_32_dp)
It has USB & Sat support that I would like to have and a nice wired remote w/display. (will have to confirm is it will play mp3 file from a thumb drive)
Sirius Sat is great for long rides also. (No hunting for radio stations.)
I have to check to see what the max cap. is for the USB to see if it will support 32 and/or 62 gig thumb drives.
Another concern is the RMS is only 14 watts x 4, and Peak Watts is 40 x 4. (160w. total) With that low of RMS Watts it could be hard to hear without adding an Amp to the setup.
Also need the OHMs Info. for the speakers. Not shown in the Ad.
The reason I'm looking at Marine Units is that they are waterproof and more shockproof than a regular car head units. No CD Player means less of a chance of Mech. problems.
Have my eye on a set of Pyle PLMR53 5.25 150watt 2 way speakers for the rear. But with a Freg. Response of 80Hz to 20k Hz. the bass my not be that good.
Also I would have to make mounts and paint them to match the bike. (They are white)
The other Speakers I'm looking at are the Bose 151 Evo. Spkrs. (Always liked Bose Speakers) They are full range spkrs but still lacking on the bass Freq.
Both sets are waterproof.
Will update with more information as I get more to offer.
Hoping that others that have been down this road will chime in.......