I am considering getting the Cateye CD300DW wireless computer - BUT, I ride on the W&OD bike trail in Northern Virginia, which means much of my riding is under high tension power lines (and some cell phone towers). The interference makes hay with my HRM (according to it, I am intermittently either in need of a defibrilator or flat-lined), and I am concerned this computer is vulnerable, too. [FWIW, the manager at the local Performance Bike store just off the trail says the Cateye has this problem.]

Anyone have experience with this computer, or alternatives with cadence, that seem to be less succeptible? (Or I'll just stick with my wired computer, although the Cateye has other features I like.) I'm curious about the Ciclosport and the Polar 720 (although I already have a HRM, it's more $ than I planned to spend, the cadence sensor is extra, and I would prefer a rear wheel speed sensor so I can also use the bike on my trainer).