If you're talking about just those three, I'd have to say SquareEnix. But honestly, SquareEnix has so little imput into Dragon Quest, I don't want to include them. Yuji Horii and his team (Armor Project) are pretty much a separate division of SE that get to do whatever they want because SE knows whatever they do, his games will sell.

And the people actually making the Dragon QUest games are people like Level-5, Arrtepiazza, Matrix, Chunsoft, etc.

Blizzard

Square Enix hands down. Capcom did a pretty good job with their "Breath of Fire" series of games. I have never played an RPG by Namco. I dont mean it in a bad way, I just havent.

Bethesda is trash compared to Bioware so yes, let us forget about Bethesda.

They all make great RPGs but Namco is my favorite by far. Tales is my favorite series ever so...yeah they win.

square but only because they have nomura.

Yes, the man who destroyed Final Fantasy... he's so keen!

Nomura didn't destroy Final Fantasy, Enix did.  If Nomura destroyed FF, then FFVI wouldn't be popular.

Uh... what?  Enix doesn't have anything to do with Final Fantasy, and FFVI was Amano-era.  Buh?

Ever since the Enix merger, the FF games haven't been as good when it was just Squaresoft  Tetsuya was also the Graphic Director and minor character designer for FFVI.  He's been working with Square since FFIV as a debugger and just a monster designer for FFV.

http://en.wikipedia.org/wiki/Tetsuya_Nomura