I got a Forerunner 255 recently and am quite impressed.
Strangely the area I expected to see an improvement on - GPS I honestly find it hard to see a difference! if I squint I could maybe see some 255 improvements (less tendancy to offset to the left) but its quite marginal. I briefly had an Epix 2 for just under 2 weeks (UK return window) and felt simllarly. Its not a game changer and will not 'fix' things for people with unrealistic expectations for consumer GPS.
I use GPS + Gallileo on my F6 and All systems + multiband on the 255
Instant pace on the 255 seems less choppy when running with fewer wild swings but still needs averaging to smooth things out. But it feels better. Maybe not Polar v800 good, but OK.
Mile lap alerts for running and 5 mile alerts for cycling occur almost simultaneously - within a second or two.
Distance recorded has been no more than 0.03 miles (45 meters) apart for bike rides and 0.02 miles (30 meters) apart over a run around 9 miles long. 255 has recorded longer in all cases so far. I haven't tried All systems without multiband yet on the 255.
Anyway I have no idea if the interesting or useful but just some morning musings while I have my coffee!
Should note the 255 was worn on my right wrist during activities, just both on left to photograph.
