Nick,
I have the SP Sport 2000E (Runflats) these are German made, (therefore my respect went up a little), mind you these are in a 255/40 ZR17 $450.00 a shot on a 10" rim.
My initial feel of them was of far more grip than the Pirelli PZero Azzimetrico's that came off, but mind you the Pirelli's had past the point of no return after my first trip to Sydney (Canvas and steel showing on the inner right rear and I lost the left rear 200Kms odd from the NSW/QLD border. I had forgotten what a handful a car that has 255/40/17 rubber on one side has and the stock 225/60/15 on the other. A joy to experience until the Stocker had come up to temperature then it was really quite good until the righthanders where the extra sidewall would flex and make for a lot of wiggling and squirming)
I have given these tyres a hiding, as I have never been fond of Banglops.
After the first 500Kms I had the fortune to take it to a quiet track day. I spun them up hard a few times and drove them as hard as I could to get them to drifting stage.
My conclusion is as follows:
They are progressive in their loss of lateral traction, which means that you can push them very hard and you can find the limit very easily simply because if you step over, they break away progressively.
OK I'm going to start sliding now!
Here I go!
OK were are beginning to slide
Time for you to do something
etc.....
I cannot comment on fronts as I have the Michelin Pilot Preceda's (there is no marking as to their place of origin).
These are amazingly quiet to the point where on a hotmix surface, window down at 40Km/h and coasting (anymore that this and I cannot hear anything for the wind noise) you can hear the rear tyres, but next to nothing from the fronts.
The Precedas are a really nice tyre and have a very high level of grip. I have to replace my front struts (hopefully this week if the rears arrive) to tell about their on the limit grip (in the testing of the rears I still had the the Pirelli Azzimetricos on the front and they were shot therefore no real comparison can be made).
Once I have the new struts and shocks in I will be heading out to a trackday again to see what the Michelin Front/ Dunlop Rear combination is like.
I really don't think you could go wrong with either the Dunlops or the Michelins. The Michelins are much more quiet ride, the Dunlops are a little noisier but with the level of sound deadening and insulation properties of the cars you will probably be had pressed to to really pick it unless you are constantly listening for it.
It probably comes down to brand and how many sheckles you would like to outlay the Dunlops will be cheaper, but not by much.
Like Zeuk mentioned, make sure you check your tyre placard and have the same or higher speed and load rated tyres fitted.
Good luck and I hope this has been helpful
P.S. the rears in the sig pic are the Dunlops.