After reading some older reviews of the old FT80 (black face) I was a little unsure about buying this product.
I eventually bought the newer version, with the white face, and have been very happy with it.
The display is easy to read in most conditions (a problem with the older model) and it has plenty of options on how you want to use it and view the info. Combined with the online Polar Personal Trainer, when you can set up programs (including specific exercises if you want) and view your progress and targets, I'm finding this a very useful product and have already modified my routines based on the info I'm getting back from the FT80.
Definitely worth the money. I'm very happy I bought it.