Get on ebay!
Buy an HP Ipaq 2750 or something of that ilk. I recently bought one for just over £60 including p&p. It has wireless internet access so I can file flight plans online, get weather etc at airfields with wifi access. Le Touquet a prime example.
Buy a 'Bluenext' bluetooth GPS and pair it with said Ipaq. Battery lasts for ever, reception is within seconds and s far mine has been flawless!! Amazon £35.
Get 'Memory Map.' Think they do EU charts for about £40. No ambiguity when navigating with a chart in the cockpit aswell. I've found it to be fantastic! Flew with a friend with a Garmin 196 and it spent most of its time losing its signal and generally I found the screen to be poor whilst my Ipaq with bluetooth performed flawlessly.
nadders.