I'm indifferent, I've always loved the battery life of AOSP android but TouchWiz, in my opinion and does a great job on the S4 and even better now on the 5. Plus, it has always been helpful with S-Health, Notes and similar utilities. To me, I'm glad I grabbed the stock T-Mobile version and then just trim things off as I see fit. It runs as smooth as anything else, far as I can tell anyway.
Phone: T-Mo Galaxy S5
ROM: Omega V4.0
Kernel Blaze Beta 15/16
Recovery: Philz Touch
How's my driving? Hitting thanks means a lot!
G1, Mytouch, HD2, Nexus One, G2, Mytouch 4g, G2x, Sensation, Galaxy S3, S4, S5...