I really want Cateye to bring back the HB-100. I went wireless to get both HR & bike functions in one unit. Any analog wireless unit will suffer from stray siganls, crosstalk, whatever. One advantage to wireless units are easier to weatherproof, since no wire contacts in the bar mount. Having said that, my old Cateye Enduro never gave up in the rain.

RumbRunner, if you can tolerate spurious readings in the house, I would not switch. Or switch to a digital system, such as a Flight Deck.

Voltman, if it were a sensor issue, then wire units may be affected as well, which I have not heard of. One thing to note is that my HR sensor can be picked up as speed when it is too close to the comp.