Forerunner 25 has been serving me well for the past two and a half years.
GPS connection is really fast and it's proven to be accurate.
However, the biggest drawback is that it doesn't have a stopwatch (nor a timer) that can be used when the watch is not in a 'run' mode.
Also, it's not possible to preprogram your workouts (intervals and such).
As mentioned before, check out DC Rainmaker's review.
Sorry, but I need to get on my high horse...
DC Rainmaker makes terrible reviews. The reviews are based off what the manufacturer wants people to hear.
Remember: He gets goods for doing reviews, so of course it will be biased towards whatever the manufacturer wants to solicit.
DC Rainmaker is kind of like a car salesman or a review peddler.
There's a similar one that does this with cameras and camera lenses; name is Ken Rockwell.
Listening to DC Rainmaker and Ken Rockwell are the worst way to start looking for gear. Terrible way.
My best suggestions is to get on forums like Reddit or other running forums and what not, and see what REAL people have to say about the product not some bozo that gets free crap to get people to buy for the manufacturer.
In fact, it drives me nuts on here when people defer and say, "oh see what DC Rainmaker says". Why not just let folks who actually own the watch give their opinion?
I'm sorry, but I hate anyone who gets free crap and then broadcasts it on TV or the Internet. No different that those "As seen on TV commercials".
I'll say it again and again, the best information is from reading the user manual of the device and actually talking to people that own that model.
End high horse........