I bought the GPS60 new about 9 or 10 years ago, first one I ever owned, pretty good unit, trouble free & still going well.
Then I bought a 7" MediaTek Chinese CE6 unit, used it until the screen died, it lasted about a year.
I used the G35 for a while, I was given it, person who had it couldn't see the small screen properly & was going to dump it until I said I'd have a play with it, figured out soon after that it ran Windows CE so didn't take long to wipe the Navig8r software & replace it with iGO.
About a year ago I spotted the G43's online for sale & for only $40 each couldn't pass them up.
These are probably my favourites, they work well & I've got a custom thingo (shell I think it's called) that runs once the navigation button is tapped that I copied & modified from the Chinese 7" device to suit the Navig8r device with a 480x272 size.
They run iGO8, iGO Primo, OziExplorerCE & Garmin-XT ok, they have good screens that are easy to see in the daylight.
64MB RAM is their biggest downfall.
Then recently a friend bought a 7" Chinese CE6 unit for around $70 from flea-bay, brought it around & took it for a drive etc. & it appeared to work well so I ordered 3 of them, one to use, one for another person & one for a spare to sit in the cupboard until it was needed.
Been having a few issues with them though, I guess you get what you pay for, they're not as good as the MediaTek device I had a while ago, I had no trouble with it until it's screen carked it.