UIs are a persoal taste Item, I select the UIs that I think are the most functional and paste them into the EQ default Directory after every Patch.
My hotkey window has the 10 hotkeys,8 Bag slots, and all my armor slots in 1 window.
My peronal stats window has endur, pet health, exp, AA exp Bars. Numeric Health, Mana, all Stats and resists.
My Group window has a health bar for each group member and a sperate bar for their pet.
Got these from Eqtoolbox.com