Well let's be honest, there isn't a lot of competition - hiPricing and LFS, basically. And if you like single-seaters then nKPro is going to look like the most promising sim.
I'm not especially excited by single-seaters personally, but more importantly I thought the tracks were all really dull, apart from that one corner at Newbury. Although when the converted tracks started showing up the FF1800 was fun for short sessions around Silverstone in 1.0.2 apart from the weird slides it would do.
I might give the new version a go if I get time, but from what I've read it sounds like there are still weird physics behaviours that will ruin the experience every few corners.