How about this...

http://render1.snapfish.com/render2/.../of=50,590,442

Never leave home without gaffa tape .

I use the Nokia N73 (pictured) or an o2 Xda IIi PDA with a Holox Bluetooth GPS receiver. I'll be upgrading to a Nokia N95 with built-in GPS when my phone contract is up. You can use the headphones supplied with the phone or just turn it up to maximum volume which can just about be heard up to around 60mph. The method shown in the pic works surprising well until it rains and you have to put it inside your tankbag's map pocket. Unfortunately, because it's wet, it will fog up which is just as bad as the glare you'd get if you put in there in the first place.

I'm also considering buying a car satnav as I agree that you're not getting a lot for your money with bike specific ones and I've yet to see a modern sportsbike (my preferred choice for a travel bike) that has anywhere to mount a TomTom Rider or Garmin Zumo. The Navman S90i looks to be good VFM at present and Makro have them in for £139.99 +VAT.

I'm also looking at buying one of these...


...as GetGeared are listing them at £54.99 for the magnetic version.

HELD 4820 Martello 20L Tank Bag-Backpack System

I've emailed Get Geared asking for the internal sizes of the GPS pocket so I can get an idea of which car satnavs will fit. They're now waiting to hear from their suppliers as these bags are currently out of stock. I'll update as soon as I get a reply.

On the subject of glare/reflection, in TomTom Navigator, I use a black map background, with grey detail and a white direction arrow (or the same scheme reversed). This does help a lot and can be downloaded from the 'net. I've also tried Garmin XT on the PDA which I really like as it has much more features but the ability to customise TomTom is a big plus point.