I have them on the Camry and am not a big fan. I stacked two rebates and a sale to pay about $375 for the set, as I remember. I was lured in by their high ranking on TireRack but they have kind of disappointed. Grip is not great, even on dry roads. Handling is not terribly confidence-instilling. I think the problem is that they are designed to last so long that they just have to be made "hard" and rather "non-grippy." (But then other tires like the Michelin Defender manage to last a long time without seeming to resort to this...) I'm not asking a lot of the tires, no hard driving or cornering, but they just feel really hard.
Their one benefit is that they are lasting (on track for 80-90k probably, as they have 30k on them now with little wear). MPG seems just the same as the factory Michelins that came off, no notable difference there.
I did get a good deal on them, but I am not terribly happy with them and will probably be stuck with them for another 3 or 4 years. YMMV, literally, but I would not recommend them. We have cheapo Goodyears (Comfortread Touring, I think) on the Sienna that I do prefer. Those were $290 for a set of four with install/lifetime balance and rotation. Frankly, I would rather have a cheaper, softer tire and be able to change it out more frequently. That's just my take after buying one of the longest-lasting tires on the market (and not being happy with them). But, as you noted, the reviews are great. Maybe I got a bad set or something.