Quest / 2610:
small screen / big TOUCHscreen
small buttons / big buttons
256 Mb fixed / CF cards up to 2 Gb
built in rechargeable battery / NO battery (only on-vehicle use)
fits in a shirt pocket / rather large to put in your jacket
City SELECT maps / City NAVIGATOR maps
10,000 track points / 2,000 track points
both have voice guidance
both have practilcally the same naviation features
I prefer my 2610 for the bigger touchscreen. More overview on the map, quick & easy address input, big mempory (all of Europe).
Rabbitson for example prefers his Quest, as he uses it a lot in the city: on and off the bike, quick & easy to remove and carry.
Not an easy choice, price is an issue too of course.
Cheers,
Michel