It annoys me too. Now that Apple has larger iPhones, I will give them a look next time around.
I bought a Shield Tablet, and it was very laggy with the Lollipop update. The features list was nice and it is certainly fast, but I returned it and got an iPad Mini 2 Retina, and am very happy with it. Yeah, it doesn't let you tinker much with it, but it works well, has a great screen and I went 5 days of moderate use and still had 28% battery left.
The problem I am seeing with Android lately is that while the hardware is amazing, the experience and crappy updates and carrier crap is just getting old. Sometimes you just want it to work and be on the latest and greatest version and call it a day. There are Nexus devices, and I will certainly look at those, but I am on VZW so even that is hit or miss. They either pass on it, or get it 6-7 months after everyone else and still charge full price for it...
I have been a staunch Android fanboi, but I will be giving Windows and Apple a strong look next upgrade cycle.