Tbh its a choice out of this and RIFT i have read both games but RIFT seems to be going for it from what you have said, im coming from the endless **** from WoW and i just want a new game! lol
I'm going to guess that the answer for you is probably play RIFT, but i'll try and expand on that a little bit.
Rift takes what WoW did, and it polishes and refines it very well, as well as adding a few neat touches like the rifts and invasions that you don't see in WoW, coming from WoW it'll feel very familiar.
FFXIV on the other hand is a totally different game, it may be in the same genre but that is where the similarities end. It was designed from the start to not be like WoW, in some ways they succeeded greatly (it has a really open class system and a massive crafting system) but then they failed miserably in other areas (combat, world design, UI).
The game was clearly mismanaged in some ways (the UI was obviously built for a console, when it was releasing on PC first). They have a new team in charge who are working frantically to fix the issues, they are making a totally new UI, and are doing a lot of work to add quests and other content, they are patching rigorously.
If you want a status quo game, go for Rift, if you want something that is trying to be radical, and partly succeeding, go for FFXIV