I'm considering a new UI - I use a modified version of the basic UI to make room for the addons I use but... well... I'm really thinking about a new look.
I tried LUI... it didn't work for me. I need something that explicitly supports Titanpanel. I can live without some of my addons. I'll post the current list of what I'm using now.
_NPCScan, Ace3 (a 'base' addon that other addons use), Archy, AtlasLoot, AuctionMaster, Bagnon, Candy Stripe Health, DBM, Fatality, Gatherer, Glamour, GreenRange, GTFO, GuildMemberStasus, InFlight Taxi Timer, MailOpener, Omen, OmniCC, Overachiever, PetLeash, Power Auras Classic, QuestGuru, RaidAchievement, Random Mount, Rarity, Role Icons, Satchel Scanner, Skada, Skill Helper, Successful Interrupt Announcer, Tabard ADdict, TipTac, Titanpanel (and a lot of its subunits).
Any suggestions of a UI? Technically the only ones that are vital are Titanpanel and Questguru (I only use QuestGuru because I like its quest/achieve tracker onscreen).