Polar hrm's

I am looking to my a new HRM. Debating between the 610, 710 and 625… Does anyone know if the 625 (which has speed/distance) can also have power added to it for the bike? That would make it a all around good tool wouldn’t it?

Yes, you can add the power option so it was SUPPOSED to be the GREATEST HRM for triathletes, but from what I’ve, heard, it really isn’t what it is cracked up to be. You can’t really do both cycling and running in the same workout so racing with it doesn’t work too well. Some haven’t been too thrilled with it here while others love it. Like everything, to each his own I guess. I’m thinking, I want to get a powertap for my power option, but kind of pricy. I think my polar accurex plus will have to keep me going for another few years.