Firstly I have to say that the tires I bought were the Atrezzo ZS+ and not the UHP but the tire isn't represented in the table.
The tires were purchased to go on the back of my Volvo S80, so quite a hefty lump of metal. I have covered close to 20000 miles in the car and with the Atrezzo's covering approximately 15000 of those miles. I was a little apprehensive about buying a tire I had heard little about but I need not have worried. The tires have performed superbly. They hold the road very well both in the dry and under heavy rain. The ride is generally quite quiet, more so than the Dunlops they replaced. The tread pattern in modern and the tire as a whole looks to be more expensive than it actually is. There is still plenty of tread left, 5.5mm pretty much across the full tire. When I purchased these they were £60 each fully fitted Inc VAT. I would most definitely recommend Sailun as an alternative and have in fact just booked the car in to have two Atrezzo ZSR's put on the front. (Priced at £106 all in for 2x 225/50R 17W 98XL)