Garmin 296, bigger than the 'hand held' ones but so much better and will give good road cover as well, it really is worth the extra ££.
Be wary of the Garmin 96, it is very good for aviation but very difficult for road use as there is only a small memory for the roadmaps and you have to keep loading different ones to cover various parts of the country.
Important, in my opinion, to have one where you can plug in an extension aerial if you want reliability.
G-BYZD
Suggestion: if you go to the Kemble rally in a couple of weeks time you will be able to see many different kinds and you should get one at 'rally' prices.