OP, get the good ones, and at £60/corner, get a full set!
The michelin energy savers on my golf were appaling in the wet, very little grip and an unbelievable ability to aquaplane. I drive a lot (25k/yr, almost all on b-roads) and like to drive fast, but these had me crawling along in the wet. The plus side was they slid really nicely, with great squealy noisy in the dry going down the cheddar gorge on my way to work!
The continentals that I've replaced them with seem to stick like shit to a blanket, are no noisier but I cant comment on wear as they are too new to tell (about 3k miles).
I wouldn't buy cheap tyres again, and would sacrifice economy for grip, after all, it's all that attaches you to the road at 100mph...