Alright, I've been doing A LOT OF research lately in to buying a helmet cam. So far I haven't decided anything yet but I'd like to share the things I have found with you guys.
Bullet Cams (no waterproof jacket needed for riding)
First of all, this is the thing Mio put out there, and I have to say, I like it! Loop recording, waterproof (including charging 12v and usb cable), bullet style, vibrates, light weight, 170° wide angle , 1080p and the claim it lets more light in so it should be good for night videos too... Sounds promising!
http://eu.mio.com/en_eu/mivue-m350.htm
199 euro
Next up, as mentioned before the Roadhawk ride, good thing about this one is you can hardwire it to your motorcycle. Does pretty much anything you want from a motorcycle camera, loop recording, bullet style, decent battery life (90 mins)
http://shop.roadhawk.co.uk/roadhawk-ride-bullet-camera
179 euro
The Ion Air Pro 3 Wifi, a beast I believe, waterproof up to 15m, that's about 45 feet I think. 1080p, wifi so you can work it from your phone, they have a cloud where you can save your videos to, 12 megapixel
http://www.ioncamera.com/ion/ION-Air-Pro-3-Wi-Fi-HD-Sports-Video-Camera.html
349,99 euro
Gopro like cams
The AEE S50, like gopro but better, wifi included, 1080p, remote control, extra battery pack, g-sensor..
http://aee-en.szvi.com/center/Mini.aspx?Ftid=336
299 euro
Drift hd Ghost S, tags videos, loop mode, remote control, low light sensitivity, wifi, external mic plug, rotatable lens
http://driftinnovation.com/drift-ghost-s/
369 euro
There are so many things out there but these are the ones that stood out for me, I still haven't decided yet, I think I haven't found the right one for me, or it's not been made yet. I might pick one of these... For now the Mio is more my thing with the 1080p and waterproof charging..