I use a cateye astrale 8. I don't particularly care for wireless sensors that are easily disrupted by blinking lights.
my wireless HR monitor is prone to this problem.
Can you clarify? I just exchanged a Trek Incite 8i wireless computer because it would CONSTANTLY report 40mph when I was riding. I'd have it all adjusted, play with it at home, it all looks good...And then I start riding to/from work, look down and notice that I'm doing record time!
What you just mentioned though struck a huge bell for me -- my computer head is right next to my Planet Bike Blaze...And when I commute to work, I always have it on flash mode.