I haven't tried every bike computer on earth but I had nothing but problems with various wireless Cateye models. Sigma's work pretty good, they lasted a bit longer than Cateye computers but even the wired one failed after about 6 years. However my now 6 year old VDO seems to be bulletproof which is why I guess they called the ruggedized. Anyway the M6.1 is a very nice unit that is completely wireless including the cadence feature. It also has some other stuff like attitude related information, backlight, and a vast stuff on the HRM. The M6.1 is the newer version of mine, but it appears to have been simplified a bit more vs mine.

VDO : Products

https://www.amazon.com/VDO-Digital-W.../dp/B072BPS32K

Just a thought that's all. VDO isn't real well known in America, but they are in Europe and they're made in Germany.