It's so so. Performance wise, it runs great (better than any other developer preview that I've used) and the only problems that I've ran into so far is with the lock screen sometimes not registering touches, tablet keeps locking after I've already unlocked it, and the YouTube app changing (it changed for the better and then returned to the old one, don't know why that happened but it did as soon as I flashed L). As far as L itself and the future of Google products , it's a mixed bag. The new aesthetic overhaul seems a little too bright and colorful for my tastes (one of the pluses of stock over skins like TouchWiz was how stark and serious it was, but now stock seems very much like TouchWiz). Google Apps are more important now than ever to Android, but I don't really want to use them anymore since Google seems to be messing work them too much in bad ways (Drive, for example). The things that I'm looking for aren't being addressed and the things that originally brought me to the platform are slowly being removed. I know I have an unpopular opinion, but it's how I feel and only time will tell whether or not I'll stick with Android or switch over to Windows Phone/return to iOS that I was on before.