In addition to the battery drain of having the phone screen on all the time, I don't want my phone that exposed in case of a crash. I carry my phone in my jersey pocket.
The most commonly used GPS bike computers are Garmin and Wahoo. Garmin has a wider product range. My personal choice is the Wahoo Bolt. I'm not familiar with Cateye's options, or how they compare with other brands.
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RIP 01/08/25...2022 Trek Supercaliber, 2018 Storck Fascenario.3 Platinum, 2018 Trek Procaliber SL Singlespeed, 2017 Bear BR1, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP