I have 2 GoPro's that I use, a GoPro Hero 960 (which was the first HD GoPro) and now a Hero HD 2. (I also have the original GoPro but don't use it. Too narrow of a viewing angle and low quality video.)
Use - Most of my filming recently has been dual sport or dirt bike riding. The 960 has been around several years now, has seem many hours of riding and I've even fell on it during a bad crash. It's been very reliable, despite the hard use. I have had to replace the camera's lens after it got scratched and used a Chinese replacement, because the GoPro version was very expensive. The video quality is still great, so no complaints there. I have had to replace the lens cover on the case as well, after some scratches.
The Hero 2 is a new purchase, I bought it lightly used after the owner upgraded to a Hero 3. I plan on adding a Wi-Fi BacPac and a Remote, so I can start & stop recording easier when the camera is mounted to my helmet. I can still interchange batteries between the 960 and Hero 2, so I've decided not to upgrade to the Hero 3. I'll be using the GoPro app on my phone, so I can view the angle the camera is recording.
Editing - I use Windows Movie Maker to edit my films... it's simple and easy. I wanted to learn how to creat a quality video and between the GoPro and Movie Maker, I think I have it figured out. I'm no Pro, but I'm happy with what I can do. Still learning though! I can cut down a day's of riding into a 10-15 min video in a couple hours or less. I have downloaded the
GoPro Studio edit software, but I'm used to Movie Maker, and it's hard to start using something new.
Accessories - I recently purchased a extendable pole
(Its a Stealth iPole) for mounting the GoPro, hoping to play around with that and get some different shots. I needed to buy an adapter to change from the 1/4"x20 threaded rod to the GoPro mount and found one on
EBay. I want to film some more 4x4 trips, perhaps some hiking stuff too using the pole.
I'm planning on doing some filming of the OSRC this year and want to have both GoPro cameras on the courses and in vehicles.