Genesis flyer owners

I put these on mine, they are cheap as chips, they last and they are super grippy good in the wet and you can pump em up to a much higher pressure than the continentals, been rolling round on them for about 6 months now and I'm going to buy them again next time I need a new tyre.
http://www.wiggle.co.uk/p/cycle/7/Vittoria_Rubino_Tyre/5360018648/

I was thinking of putting Continental Ultra Gators on mine, but if these are good, I'll consider them too. Are they very harsh to ride on?