should I update? topic

I just ordered the shield tablet from amazon, it should be here in a few days, and I am wondering if I should let the tablet update to lollipop or stay on kit kat. I have read some problems with lollipop like memory leakage and battery issues.
Do the benefits of Lollipop out weigh the glitches?
I haven't used xposed on my current tablet. I know that in lollipop you can't use xposed (I plan to root)