haven't played the reverse tracks much, but i think the hardest track (for me at least) is sol2. something about -right, right, right, right, slight left, right doesn't appeal to me. I also think vineta is tricky because of the lack of gradual turns- i use the d-pad so its difficult to follow a good line. anulpha, moa, and metropia are all fairly easy. Sebenco is awesome. i hated it at first but then realised the turns are all about the approach- and its really fun trying to set yourself on the right path. Chengou's inverse camber will always be tricky, but once you learn how the hit the chicane, it' not so bad. Ubermall rocks as well, love taking finger off x at that sharp chicane to hear the engine kick back in- great sound , plus that boost plus barrel roll bit is awesome, love how that spectator protection thing is gone.