130 and 135 Ronix Bill has to be top 1 or 2 in grom boards from what I have experienced.
My 110 pounder rides the 130 and kills it high and deep into the flats with no ballast behind an old ski boat. He loves it, says its super fast and loose and it pops like mad. It also has a slider base and a decent allotment of flex for park trips.
Evo has it in blanks and combos for really good prices right now. Less than what I paid.
Good luck and isn't it fun buying a board for your boy(s)? I have 2. Its like being a 12 year old with a Master Card.