DA2 and DA:I are tied for me I think.... which makes feel absolutely terrible because I lvoe Origins. XD
But I only really got attatched to one playthrough character with Origins, which I think killed some of the replay value for me. After that playthrough was complete, it became my canon and then... other PCs just felt wrong I guess, could never complete the game with any of them. XD DA2 was a great experience, because my expectations were abysmal and it surprised me with a great story, a lot of gray morality, which was great fun, fun combat, and ultimately I enjoyed rolling three mains for that one. Also, great DLC, Legacy was fantastic. I probably enjoyed DA2 the most, but I acknowlege this is probably due to the (really) low expecations I had going in. It had a lot of flaws.
So does Inquisition, but I wound up voting for it. Partly out of pity cause it's so terribly behind the other two, here (;D), and because Bioware did try to inovate a lot with what we were given, even if they weren't always successful and got in a little over their heads, I think. I respect that, though. It was a good attempt. Not the best in the world, but good. Still! Great cast of characters, good story, love my Lavellan, rolled several palythroughs through to completion, and I absolutely adore the art direction.