in definition terms, silkroad is rather grindy, espcially without a golden ticket but it compensates for it's style and gameplay. i wouldn't place SRO on top though, there are other things to do in SRO besides killing monsters 24/7 (although that's the idea of leveling) anyway, i would say Xiah, after lv 5 you'll be spending days and days to level up (with about 1% or even less at lv 7/monster)
