[Neogenesis]

I'm looking for a huge UI not just a simple addon like Healbot or Grid + Clique looking for a nice UI that fits around a 1024x768 Res. That i can see Raid windows, dps/healing done Threat and etc.,,, plus a place to put all buffs and debuffs. Also will like to know what types of addons are going to be in this UI.

[Undeathguy]

I think you should try and make your own, because that way you shouldn't have any problems with fitting to your screen, and I like a UI that I have made myself, as I know where everything is, and know what I can change if I need to, I suggest something along the lines of

Raid Frames
x-perl (the one I use), pitbull, grid

Threat
Omen (I havent tried any others)

Damage Meters
Recount (seems to be the most popular, and it gives a lot of info)

Buffs
Elkano's Buff Bars

Misc
Sunnart or CBH Viewport (they both give space on your screen to put things without compromising view space)
Bartender/Dominos (Make Movable bars and things
Buttonfacade (Just makes buttons look nice)

Check out my signiature to see some of them.

[Sanstrom]

I have set myself up with some similar UI to Cider, just to clean up my screen some and get the information I need.

Bartender4 - Great putting actions bars where needed.

Deadly Boss Mods - Personally a raid requirement.

MikScrollingbattletext - Love for realtime combat information.

Omen - Threat meter

Quartz - Nice for the cast bar time.

Recount - DPS/Heal/ Everything meter.

Satrina Buff Frame - Cleans up buffs into a nice and neat location.

Sexy map - Name says it all.

X-perl Unit Frames - So far this is the Unit frame I have liked the best.

I myself am looking for something that is a lot nicer for an addon UI package.