775 or 2360 or 3790 or 2460

 

I think these four models have 8GB of internal memory.
Some are available refurbished.

Which model would be best to buy?

?

Don't know what to tell you other than it depends on your needs and your pocket.

I'm waiting for the 2460LMT NEW to go on sale (sooner or later)

--
Garmin 38 - Magellan Gold - Garmin Yellow eTrex - Nuvi 260 - Nuvi 2460LMT - Google Nexus 7 - Toyota Entune NAV

They do have 8gb of

They do have 8gb of memory.
See here: http://www.poi-factory.com/node/33980

Have you tried their selection guide?
https://buy.garmin.com/shop/shop.do?cID=134

--
Nuvi 2460LMT.

3790 has higher resolution screen

Looks like the 3790 has the best screen
with a resolution of 800 x 480 pixels

5 inch nuvis are inferior?

I have not seen or touched a nuvi 3790, but it seems to me that the higher resolution of 800 x 480 should be far more important than the screen size.

One should be able to see much more information with the higher screen resolution.

It is not clear to me whether the high screen resolution is the future for Garmin Nuvi units because many in production Nuvis have the lower resolution screen.