kdogkodiak

It is time to upgrade from my 310. I am not currently training with power, but am looking into that for the future, so power compatibility is an issue. What are the pros and cons of these 2 computers?

antmeeks

Excellent site with very thorough reviews (you should probably bookmark it for future reference on other products):

510:
https://www.dcrainmaker.com/2013/01/g...th-review.html

810:
https://www.dcrainmaker.com/2013/01/g...th-review.html

CALE262

I have both of them (810 & 510 on my wife's bike) they are both similar except for the map feature of the 810... I think it depends on where you are riding, if it's mostly local riding there is no need for the 810 IME. I was out of town last week riding on Vacouver island, lots of nice twisty back roads...the mapping feature came in extremely handy a few times on that trip.

carl_h

+1 on the comment above. I upgraded from a 500 to an 810, primarily for the map feature. I really enjoy using the map feature with club rides because I can d/l the map from RideWithGPS for the ride and have turn by turn navigation. I don't use the maps much when I'm just out riding, but planning a route and following it through unfamiliar areas is a nice feature that I enjoy using.

TrojanHorse

Keep in mind you can do that with a 500 as well but it's clunky. I usually do it for long rides through unfamiliar territory - you can see a list of upcoming turns and the distance to the turn, you can see an elevation profile or you can put it on a sort of chintzy overhead line drawing (just your projected path, mind you, no streets or anything). You have to do all route planning on your computer and download the track to your 500 though, it's a bit of a PITA.

The 800 series gives you more of what you're used to with a car GPS in terms of graphics and interface. The larger screen looks nice too. It gets hard to read that 500 when you have 8 data fields displayed.

SpeshulEd 

510 is similar to the 500...plan the route in garmin connect, upload to the 510 via your phone and the 510 displays the course you should be on - only without road names or anything. I find it works quite well and takes about 5 minutes to put together.