So I got fed up of the unreliable instant pace on my 945 (had two same problem) and decided to buy a 935 to test the difference. I'll be updating this thread as I carry out more comparisons.
The first run today I ran the usual route and the 935 instant pace was good whilst the 945 was jumping from 5:00/km to 5:25 and even 5:40/km in the same usual spots it always does. It was strange to see the 935 hold 5:05 as I passed the same 200m stretch the 945 always goes haywire. It's good in open roads but not with trees on either side and not around certain buildings. The map of the 945 tracks was terrible (check out the start of the run around the houses it's WAY out, worst I've seen it's usually not this bad so I'll see what happens in the following days. The laps and overall pace are mostly equal as it is with my FR10. Used GPS only for both watches as GPS only works better on 945.
connect.garmin.com/.../6512294628 945
connect.garmin.com/.../6512297485 935
Clear blue skies.
Such a shame because I can see all the little improvements made to the 945 now, so many little things that all add up that I will miss, they really refined it for example lap history on a saved activity seeing all laps same screen with heart rate too, the options dialog when starting an activity, the sunrise/set widget having 24 hour numbers and sunlight left, screen is less reflective I can see my face in the 935, the heart rate gauge field, having weekly distance on the watch. But he most important thing is GPS, the GPS is already not great so it's important to have the better one. 945 GPS is flakey for instant pace and I'll like to test it on a shorter workout intervals to see how it performs.
