I have zero experience with 820. But if the 830 screen is significant improvement I cannot imagine how 820 worked. For me 830 is far from good. I opted for 830 because of additional navigation features. And while I use Di2 to control the head unit I do not need to work with the touch screen while riding I am accepting it, but as I said - I do not rate it positive.
Same here. Nonetheles DCR was very positive about it and said he did not hear about so negative experience. But I have to admit that it my first touch-screen Garmin so my expectations my be "incorrect". I chose 830 to have better navigation (530 does not have "go to address").
No. The possibility to navigate to address or POI was the only reason for me. I used 520 as last Garmin and moved over to Bolt. Now I believed I could go back to Garmin (I have also FR935 anyway). Mydecision to opt for 830 was mainly drive by super positive reviews for 830 and negative ones for Wahoo Roam.....
If it's like 1030, then it's kind of "good".
It will not be as smooth as a smart phone if the processing power and the OS is not going to be power efficient enough to have 20 working hrs.
I think one could consider the review "misleading" to many general consumers. However, to those from previous versions of touch 810, 820 and 1000, the 1030/830 touch responsiveness is "good". At least now it calculates reroute in navigation much faster, and you start a course with navigation much faster than before...
The comparison with smartphones is often partial and misleading, because these are two completely different class of products with unrelated use case. eg. try using your smartphone touch screen with winter cycling gloves on and you'll realize how much better the garmin edge screen is. Or try using your smartphone with sweat drops or rain on it, it becomes totally useless.