DW and I both had 110's, but I bought a used 305 off eBay for about the same price I paid for her 110 new last Christmas. Other than the size and fact you can use the 110, 210, and 410's as an actual watch, I love the 305! I had so many issues with the 110 negative charging (search the web for this because it's common with that style of Garmin watch) and I've never had that issue with my 305. I've only had one run where my 305 lost reception and that was the second run I ever took it out on. I have hardly any days where it's noticeably off (run the same routes enough and you learn half a dozen markers or more) where my 110 was doing it nearly every week, which is why I replaced mine.