I've had my 510 for about 2 months and being a pretty anal OCD type guy, I really like it. There are 3 or 4 screens that you can put whatever info on you want, from 4 items per screen to 7 and you can rotate like 6 or 7 screens with firm touch screen. I normally track HR, speed, distance, cadence, elevation and time. I can see all the info I want during the ride and after it's over I just save to the 510, then save to Garmin Connect so I can review on phone or computer. Have never had a problem with data loss. No the route map screen is not like Google Map, it's just blank but showing trail you've ridden, but that's ok, I know where I'm going and where I've been. I think I spent like $350 for it and the sensors bundle. For a simple 250 mile per month guy, it does what I need and want.