I've had this for nearly 2 years now, it's been replaced by the newer 2620 now, but that's not to say that it's not a good bit of kit, and there are some good bargains to be had these days. I paid £350 for mine, which was just before the 2620 came out.
Mine came with a beanbag style car kit, with a speaker built into the cigarette lighter plug. It also came with a really tacky looking bike mount, which I've since upgraded to a touratech mount for my bike.
It's quite a bulky bit of kit, being around 5"x3" on the front, but then it does have a nice big screen. One of the biggest advantages for the 2610 is that it's completely waterproof. I've ridden with it through all sorts of weather, and it's never had an issue, the same goes for rough roads, this thing can really take some abuse.
Using the 2610 is quite straight forward once you get used to it, though it does sometimes struggle to find very minor roads when keyed in, and often I have to find a more major road nearby and locate the minor road manually on the map. This really isn't that hard to do, but it's still a bit of a pain. Map updates have helped with this though, and I'm currently using Version 9 of the software. Mapsource is the software you install on your PC, which is very user friendly if you're planning a big trip. The only downside being that it won't work on a mac.
It only has a 2D map option, which can be set to automatically take on night colours. It doesn't look as fancy, but I prefer a 2D map as it seems more informative to me.
It is loaded up with all sorts of waypoints, including petrol stations, restaurants, even cash machines. I would never take these for gospel though, as once it directed me to a petrol station that was no longer there. I have checked though, and this has been rectified in the newest version of the firmware.
The navigation is spot on, giving plenty of information in plenty of time, and you can choose whether you want an english or american voice as well as all sorts of different languages.
Back when I bought the 2610, I would have given it probably 4 stars, it's a good navigator with a few cool things like an average speed counter, a very accurate speedo, and a multi trip meter. However these days the introduction of lower priced tomtoms and the ability to have audible speed camera warnings would have me knock a star off.
It's a good navigator, especially if you're buying one cheap on ebay and the like, you get a lot for your money.