I would say I ride in the XC / light trail categories, and I'm 74kg.
I run a Maxxis Ikon EXO 2.2 rear, and Vittoria Barzo TNT 2.25 front.
I love the Ikon on the back, especially at the appropriate lowish pressures. Barzo on the front is pretty good, relatively lightweight, but I think there's better out there.
I think I'll go for 2.35 front and back when I buy my next tires.