It looks nice, has a lot of little built-in features (auto repair using either personal or guild funds when you talk to a vendor, click a button to vendor all grey items, etc) and I love the buff/debuff indicators on the party/raid frames for healers. The new version also allows you to make most changes without having to reload the entire UI. So you no longer have to type in /heal or /dps anymore, the UI just changes for you. You can set it up so that when you switch between your primary and secondary specs, the UI switches automatically from a DPS to a Heal layout (or any other combination you prefer). The layouts are still there though, and they added in an automatic profile swap when you switch specs in it's place. That's what i need!ElvUI did remove the /heal and /dps commands. It got the /dps and /heal profiles and it look simple and minimal. I've been trying other TukUi skins but i've grown stuck with this one. They removed the /dps and /heal profiles which i thought was useful. I think that ElvUi after the major changes in 4.3 was horrible, that's why i stopped using it.

Though, i use another skin for my TukUi called CyUi which looks alot better than ElvUi and the original TukUi.

Tukui wow 3.3.5a