Need sat nav this week-tt one or nuvi 350?

[FISHGUTS]

I'm going on holiday next weekend so I want to get a sat nav unit this week.
I Would like to have waited for tom tom 510 etc, but it seems they have been put back again.
I'm not really looking for the best value unit, more the best one for me.
My dad will also be using it in France so I was thinking the garmin nuvi 350 would be better than the tt one with the france sd card and either of these would be better than say the tt 700.
Any views would very helpfull.
Thanks.

 

[FISHGUTS]

A lot of peeps seem to say a pda is too slow though ?

 

[FISHGUTS]

Thanks for the opinions
I don't really need a pda for anything else and I can't be bothered finding out which one to go for etc.
Think I'll go for the nuvi 350. As v man says I like the fact it calls out street names.