Motorcycle Navigation

I know most people here use this for cars but any thoughts on navigation for motorcycles. I have looked into a few different ones. Those made for motorcycles and those made to be portable in cars. I am looking for a navi system that has bluetooth with A2DP technology (thats so that the unit can connect to a helmet or set of headphones), can connect to the IPOD by a hardline cable and can connect to a cell phone via bluetooth. Any ideas. I've looked at the Pioneer, that does all but doesn't connect to a helmet, the Clarion does all except connect to an IPOD via hardline, the Alpine doesn't connect to a helmet, the TomTom is way overpriced and doesn't connect to a helmet or IPOD. I am trying to put this on my R1 so I can't have something big that you can put cds and dvds in. It needs to be a flat screen.

ALL the motorcycle Navi's are WAY overpriced ... Most are the same internals as the car products but waterproof cases over double the price ...
IMO you are wanting way too many features ...
I'm running a simple Garmin Nuvi 205 that I installed in a pelcan watertight case , Total cost under $100 it gets me where I want to go and the audio can be heard at highway speeds , I just keep my IPOD in my jacket with the headphones in the helmet ..

My buddy just installed the Pioneer on his and although its not waterproof total install cost him about 500 (included paying someone to install), rear vision camera, ipod direct connect, and external speakers with a small amp but he was pretty disappointed when he couldn't connect to his helmet for sound. The one downfall to not going with a motorcycle Navi is that they are not weatherproof but most Navi's have built in battery sources so that worst case you can put it in your bag.
I'm trying to minimize as much in my pockets as possible and to make things as clean cut and wireless as possible. Thanks for the feedback.

In the sport of geocaching, Garmin rules... but I have never used in-car mounted units, just portable types. Usually the cheaper gps just have less in them for maps.

https://buy.garmin.com/shop/shop.do?cID=132

The portable types of gps are usually waterproof...

https://buy.garmin.com/shop/shop.do?cID=145