I'm going to try some Conti sports on the Elite when the wheels come back from the refurb.
I found Contisport SC5 unsuitable for the Omega - immediately they went on, hopeless levels of grip, immediately noticeable even when going carefully (as I always do on new tyres until the release compound is worn through). I hoped it was just the release compound, but it never improved, and the fronts were utterly spent by 3k. I think the rears lasted to 5k IIRC.
Wheels went in today for refurb and I get them back next Monday as I'm working from Friday over the weekend. Just been on the Blackcircles web page and they are doing F1 Assy 2 for £91.21 each, if they last more than 10K like the Falkens I had fitted for MoT last year I may put 4 of them on.
Plod had fitted Michelin Primacy HP's when I got the Elite off of Josh, which lasted 3 years and 20-25k miles. They are £98.12 each and the Pilot sport4 are £98.13 each. I had no issues with them the way I drive. I have to make my mind up this week so I can have them fitted next Tuesday 
I currently have Pilot Sport 4's on the back of both mine. Too early in their life to properly comment, but so far I'm happy with them - happier than I've been at the same stage with GY F1 A2, Conti SC5 and the current crop of RTs.
Paid £90 each fitted for the 17's and £142 each fitted for the 245/40/18s (before the £36 per tyre discount due to the GY failures). In Jan.
Gixer tried my 245/40/18 PS4s on the front of his, seemed happy enough with them, but possibly a notch below the Pilot Super Sports he currently uses on cornering grip.