Whoopee!! It's on backorder, but I just ordered a Polar 720i from REI, got 20% off plus my dividend credit so it came to a much more attractive number. Now, I have to order the IR option as the home compooter doesn't have it, then bribe the Big Bother to upgrade it to XP, burn some back up disks and install/test the software. It is so much easier to just hand him the computer and cook him dinner.

I was reading www.mtbr.com reviews on the 710 and someone mentioned the transmission issues:

this monitor works as advertised. for those of you losing the signal regularly, there is a fix. the transmitters, either speed or cadence have 3 output settings adjustable inside the case. they come from polar set at the lowest output so they do not interfere with another riders monitor. if you open the case of the transmitter you will see a dip switch as i remember. just change the setting and give it a try, you'll not see an indication of what setting does what but trial and error will solve your problem. just make sure that the oring is seated properly when you close the case.
Not sure if this applies, Veronica, but I thought it might be a factoid to keep in the back of my pea brain.