I used to raid with no addons. Then I hopped onboard with recount and DBM. Now I've come to love the flexibility of weak auras 2 I'm also running ask mr robot (but I never remember to actually record logs) And I got exorcus for kormrok.
I'd really like a better raid UI, but haven't looked too hard into one. I'll probably grab one for the next xpac.
Speaking of raid UIs. I can't wait to try out the new built-in UI that is coming with Legion. From what I've heard so far we're getting different hovering bars and a weak auras like bar around our toons.
If it's adjustable enough I might get to eschew one more addon.
Btw my addon list:
DBM Recount TellMeWhen (basically a low-tech weak auras)