Well, I'd rather have a polished game that was late than an early game that was buggy or unpolished. Then again, being a Valve fan, I've built up a tolerance to delays.
However, the statement that they are delaying for "quality" concerns me - quality isn't something that can be applied to a game in a few months, like a graphical upgrade. Quality is something that has to be in-built and developed over the entire development process. You can't "apply" quality to a game - all parts must be of good quality for it to be of good quality. The fact that they are delaying it "for quality" strikes me as an attempt to salvage a game that they just realize probably wasn't going to be very good.
I hope Deux Ex-Human Revolution will be good though. Square's reputation in the Western Market has taken a hammering as of late, what with the FFXIV mess and the release of Kane and Lynch 2: Dog days. Fair enough, K&L was published by Eidos - but in conjunction with SE. And Deux Ex HR is being made by Eidos..... so yeah.