6.5 isn't a great step up from 6.1 in terms of functionality.
But it's providing me the SAME efficiencies as 6.1 with approx. the same number of tweaks (esp Cookie's Home Page app).
ie performing just like 6.1 on my baseline tasks.
I have had the usual # of freezes that I had on 6.1.
Every OS wether stock or otherwise have whiners. Nothing new.
As for the somewhat 2 pages of complaints so far....what a body of damning evidence this is.
Always said smartphone need smart users.