Hey Chrome,
I have a RAM mount on both my CVO and V-Rod, and I use a Garmin Zumo 450 that I move between them. The best motorcycle GPS I have ever used, and I tried three of them. Unfortunately, they don't make this GPS gem anymore. I bought a backup unit off ebay in case this one ever dies !
I like it because the articulation of the RAM mount places the GPS right next to the instrument cluster on both bikes, so it almost looks like it belongs there. I have seen folks mount them way out on the bars close to the hand controls, but I don't like that. I like to keep it central to the rest of my instruments, so my eyes are always looking in the same place for all of my road information. I have been using this setup for about 5 years now across 3 different bikes and I really like it.
I have the power cord run to my ignition on both bikes, so it is only powered when I'm riding.
The real star of the show is that RAM mount. It's like a little robot arm that you can place anywhere you want it......highly recommended mount.....
You can get the RAM mount from Amazon. It uses the standard 4 hole mount that pretty much every motorcycle GPS uses nowadays. I think they call it the TAB standard mount???
Jeff