IMO.. unless the idea of having wireless floats your boat.. the "wired" model is great. You don't get to bring the receiver inside and wait for the beeps.. but, you'll likely have more consistant reliability with the wired model. I've had a couple of them for almost three years now with nada problemo. Having some experience with radio frequency, I know it's not reliable in some situations, it can be kinda quirky in that, as a for instance, if you live in a stucco house, the chickenwire mesh can be an issue, yet in other houses with mesh it would work great.
That said, I bought an Maverick ET-7 (a remote thermometer) from some online discount outfit and it works fine but I find I never use it.. I stick with the old reliable Taylors.
Don't ask me why.. just more convenient I guess.