Pros: Reliablity, super light weight, flexibility, old school service/support, Custom Shop

Cons: None. Just about perfect - and if it's not - they will rebuild to your need no-charge

Recommendation: If you need/want Broadcast quality this is the dope unit. Best for pro racer or TV production.

Pros: easy to use mount, can move from my full face to half helmet. Also it doesn't get confused by the light when coming out of trees into a field.

Cons: at first I didn't dealing with the AA batteries, but later upgraded to Li-ion, so much easier.

Recommendation: I actually have the 580 camera, and I'm very happy. The sound is good, you can hear it when you bush up against a tree, or breathing hard when pedaling up hill- good on wind noise too. Nothing like the first system I bought years ago.

Pros: light weight, plug-n-play, dual mics, great low profile helmet mount, and supurb video quality.

Cons: Need to have your own recorder, like most helmet cams.

Recommendation: The video quality is the best around, they're a little more expensive...but so worth it. The audio is my favorite part, tried out the Vio a year ago and the audio was clearly not their first concern. Xterme Recall seems to care about all aspects: video, audio and ease of use.