Conti 5 are great, that doesn't seem the best deal to me. I normally find a local tyre place to come close to online quotes.
I would aim for nearer £90 a corner on the conti 5.
Conti 6 is out and getting great reviews, but not generally available as yet in the UK.
I will go for Michelin PS4 when I next need tyres, also worth considering Goodyear F1 assymetric 3 as these can be found for £8-85 and perform well, if not quite as long lasting as others.