I'm seriously considering buying a nice cycle computer/HRM, most likely a Polar s520 or s720i. However, I heard power lines can interfere with the wireless operation. I beleive 100% of the roads I ride on have power lines. Hell, I think most roads in S. Jersey have powerlines. How much of a problem is this? I don't want to spend $250 to $300 on a nice setup only to have it not work properly.

Thanks!

Mike