I've had F1 Assym's on the S204 for quite a while now, but had inner wall splitting problems rear and front after about 20k miles. Rear OS let go big style in North Norfolk (300 miles from home) some months ago, was able to replace with identical (possibly Assym 3's rather than 2's) but at a cost (about £140 per wheel). Front NS let go a couple of months ago after again just over 20k miles, small slit so not as drastic as the rear, but still not repairable so 2 new tyres needed - this time I went for Michelin Cross Climates which were about £20 more than Eagles (and came with a free dashcam which I'm giving to my SIL), but although slightly noisier than the Eagles will remove any thoughts of changing wheels for winter, so will get the same on the rears when they wear out and sell my set of winter wheels - which i've not used for 3 years.
My advice - check the inside tyre wall not just the outside easily visible part, especially once you're past 15k miles on the tyres, I don't want to think about the result of my rear OS letting go at 70+mph on a motorway compared to 35mph on a country road.