I started off using the Sigma Rox 5.0 and it worked very well and I had no complaints. Wireless, speed, cadence, heart rate, all at a great price with great quality.

A while after, I upgraded to the Rox 10.0 GPS with ANT+ speed and cadence sensors and heart rate monitor. Again, I have no complaints. The bike computer is easy to use and everything works well and as it should. The Sigma Data Center software works well too on my mac and they recently added Strava integration (right around when I stopped caring about Strava). Sigma also has great customer service.

I ended up going with the Rox 10.0 after giving a lot of thought to both Sigma and Garmin and would make the same decision again.