The newer models are tons better than the 205 or 305 model. The new ones have a click stick for easy navigation and data entry. Plus a color screen. The 205 and 205 are smaller, but not that much.

I had 3 of this device before I gave up completely! The GPS works great, but the reason I wanted it was I could upload and track it on my PC. Everytime I tried the whole thing froze up. I had to keep returning them. Finally I opted for a standard Bike computer and figured I could manually track my progress.

I'm amazed at how well the GPS function works. It detects satellites inside my home which is better than my old Garmin Vista. It's consistently within 0.05 percent of my bike computer so I trust the accuracy.

I'm not sure about the problem the reviewer Skelty had, but I've interfaced the unit with three other computers without any problems and can download my progress. I can see how I've improved over the same route, or see how my progress is slowed by a head wind. It also works well for day hikes to show your path and record speed and miles. The only issue for hikes is that the battery life is limited to one day.

I love doing big climbs on the road bike and this makes it so I don't sound like I'm exaggerating to my cycling pals. I have the 305 with HR monitor and cadence and those parts were kind of spotty on how well the work, but the gps itself is awesome.

I love it! Now I can prove how fast I rip down the singletrack.