Only 4 days with ap2 (2.5) after 1 year with AP1 but so far it performs better in all of the challenging parts that confused the AP1 car. Driving Houston to Galveston with construction and temporary lanes in particular ap2 did great where I constantly had to disengage AP1. On 2017.40.
I just did the upgrade about a month ago and am interested to compare notes. I drive mostly LA to SF, had about 25k miles on AP1 over 2 years and now have about 1500 on AP2. Most recent 100 odd AP2 miles on 2017.40 and the rest on 2017.38. I also have a HW2.5 car.
Here's my sense of it below. If you have a moment maybe you could tell me where your experience has been different.
My overall sense is AP2 is not as trustworthy as AP1 was as of a month ago, but it has some places where it is better. I'm especially pleased with accelerator control under AP2 - it seems to be a lot smoother at maintaining the space to the lead car in traffic with fewer sudden acceleration and braking events compared to AP1. AP2's management of lane merging events is really nice - it seems much better than AP1 in those situations. It almost never brakes unnecessarily whereas that was common enough on AP1 that I didn't really let it handle merges.
The biggest single weak point I see on AP2 seems to be holding the lane center on curves, especially the second bend on an S curve. AP1 would move around some but it was really rare to see it cross a lane marking whereas I'm seeing AP2 do that frequently whenever the freeway gets more than slightly twisty. It also seems like AP1, at least as of a few months ago, was really good about maintaining spacing with vehicles in adjacent lanes but AP2 has me watching those gaps much more closely. It had probably been five thousand miles since I disengaged AP1 because it was moving too close to another vehicle but I'm seeing that happen with AP2 much more frequently - maybe every 30 miles in heavy traffic.
Stop and go traffic with speeds staying below maybe 30mph (really common here in LA) are really good in both 1 and 2, but the improved accelerator control in 2 makes me a lot more comfortable with it. At low speeds AP2 seems to detect unmarked pavement boundaries like curbs and shoulders which AP1 didn't seem to be able to do. That mostly isn't helping much but I find it really interesting because it bugged me that AP1 was so lame in that area. I also notice that AP1 was really picky about what it would consider a 'lane' in terms of the spacing between lane markings. When you had lane merges or splits it would be more likely to get lost but then it seemed less likely to actually do something stupid - seems like it could coast through the uncertainty better.
So far I haven't seen as much ghost braking for bridges on AP2 as on AP1, but I do get unnecessary braking when forward cars on adjacent lanes intrude on my lane. All in all it's a lot more ghost braking when I drive in the city and a bit less when I drive on rural limited access highways.
Occasionally I will play with it on surface streets to see what it can do - keeping it on a short leash of course. Though both AP1 and AP2 seem woefully inadequate for surface streets where I live it seems like AP2 is overall making fewer mistakes, but when it makes a mistake it's more likely to be a scary one.
In general that's probably a pretty good overview actually: curves on AP2 seem a lot worse (I mean, AP1 has gotten really, really good with curves this last several month) which is a big deal, but if you exclude that I think it makes fewer overall mistakes than AP1. And when AP2 makes mistakes they seem more consequential.
Anyway - be interested if your experience is different.
P.S. I approve of your color choice
