Please keep in mind though that the reason the AUR tends to work well is because it's a very loose wrapper over source packages. Compiling from source is a very flexible process which adapts well to system changes. But at the same time it's resource-consuming (CPU time and RAM).
Most importantly, AUR is completely unsupported by any of the Arch-based distros including Arch itself. Anybody who mentions "AUR compatibility" either doesn't know what they're saying or are making a tongue-in-cheek observation about how their system happens to be coping well with a very specific selection of AUR packages that they are using at that particular moment. But there's absolutely no guarantee that your system will do well with whatever AUR packages you attempt to use, or that they'll keep working a month or a year from now.