[Nexus 6P Android Development] yourrealking:
I have tried three similar ROM's from this developer, AOSP, PixelDust, and ExtendedUI, and after days of trials, I have decided to chose ExtendedUI among the three. I want to share what I have found to help others to decide.

(1) The three seem to be similar, like three brothers from the same parents. Thus, they share some similar problems and advantages. When I installed ExtendedUI over PixelDust, it worked without even wiping the existing data.

(2) Google Camera does not work well on all three ROM's. It crashes the camera driver and I had to restart the phone. Now I do not exactly remember if the stock camera/OpenCamera had no problems on the AOSP, but the two seem to work fine on ExtendedUI. So, camera does not seem to be a big issue, at least for ExtendedUI.

(3) On all of the 3 ROM's: Music slightly stutters when rotating the screen. Screen animation is smooth. The OS seems relatively stable. The OS crashed once or twice, but it did not happen that often to make it unusable. I do not find problems in playing audio (including Bluetooth)/video or any other apps in general. All apps (other than Google Camera) seem to be working fine. I did not have noticeable slow-downs compared to the official LineageOS 8.1.

(4) AOSP version had a problem that I could not use the newer Android System WebView. The two others had no such problem.

(5) PixelDust had more options for the Dark Theme (Google, pitch black, coffee something), but it lacked the "Dark Mode" toggle icon in the Quick Settings, which was a bummer. Even though it had timed scheduling for that, I often manually need to turn it on/off. Two others had the toggle icon.

(6) Pixel Launcher constantly crashed on AOSP, and thus was unusable. Pixel Launcher is the default included launcher and works fine on ExtendedUI.

(7) PixelDust's launcher had some weird customisation that showed a simplified bottom pop-up when clicking the (i) icon in the context menu, which usually shows the "App info" screen on other launchers. So, on PixelDust's launcher, too see the "App info", I had to click the (i) icon and then click "App info" again on the bottom pop-up.

(8) AOSP's launcher and Quick Settings had weird squire icons, while the other two had the round icons which is the same as Google's stock ROM. Personally, I found the squire icons ugly. Also, AOSP's font was different from that of Google's stock ROM. ExtendedUI has the same font as Google's. I find the latter font is more pleasing. By Google's stock ROM, I am referring to the Google ROM in Google's Android Emulator. I do not have a Pixel phone, so I do not know how Google's ROM looks on a real Pixel device.

(9) PixelDust had more customisation options for the status bar, etc, whilst ExtendedUI seems lacking it. For example, on PixelDust, I could place date and time at the centre of the status bar, but on ExtendedUI, I cannot even move the clock to the right.

(10) AOSP kept deleting recovery, so I had to reflash it constantly. The two others do not have the same problem.

(11) AOSP does not come with Google Apps, but the others came with it. It is not that extensive, but they do contain some apps/services that I do not want. ExtendedUI seems to have more Google services than PixelDust. Maybe, for those meant to be Pixel phones? It even had an app called "Pixel Tips".