More safety with motorists is a real good thing! I almost bought the Garmin version a while back since many of my riding buddies liked theirs, but when I heard Wahoo was coming out with this radar unit I decided to wait and match it to my new Wahoo head unit. Setup was very quick and easy. Battery life is excellent and the radar is very accurate. Of course I still use my sunglasses mirror for busy SoCal streets, but when you are flying downhill it's nice to know you can take the entire lane with no cars behind you. Yes, it's a bit pricey, but your safety is always worth it!
The light is a bit heavy compared the to the Light & Motion light it replaced but the battery life is the best I've ever had on something this compact. Most of my riding has been during the day so I'm only using one of the flash modes most of the time but it's been over a month and it is still reading in the green. I might also have about an hour of use on the low and medium setting after dark so really it is very impressive, wish I kept track of the actual time. The light is solidly built and I like the mounting system, no slippage at all and I do ride on some terrible roads. It is bright enough for me, there might be some washout as the other reviewer mentioned but it hasn't bothered me at all, for the price this has to be one of the best available.
I've had this for about a month now and ridden with it at least 20 times. While I wasn't sure I really needed it when I bought it, it has become almost a necessity now that I have used it. I am a senior rider (78 years), and it is wonderful having the few seconds of extra notification of a car approaching from behind. It gives one sound when a car is approaching, a slightly different sound when a string of cars is approaching, and a different sound if the approaching car turns off at another street before passing you. It also has a graphic display on the Element Bike Computer which changes color from green to orange to red as the car approaches. We have a lot of younger (almost everyone is younger than me now days) riders who are very capable (fast) including a fair number of pros (Boulder, Colorado), and the Trackr also alerts me when someone on our many bike trail is approaching on a bike. While I always double check with a mirror, this is a necessity at my age and probably useful for younger riders. The only issue I've found is riding a bikeway that parallels a highway (such as the one along US 36 from Boulder to Denver). The unit kind of goes crazy (constant beeping) in that situation and I have had to turn it off.
I've been riding with Shimano dual power meters (two bikes) for almost ten years. Never really needed the dual, since my power was essentially the same. It was an expensive choice that didn't add much, if any, value. Third bike was a SRAM spider power meter mount, it was great, but I think the cost was around $400. This is just as good, but not nearly as much money. As long as it holds up, it will be the best value power meter I've purchased in ten years. 4 stars only because I've only had it two months.
