IMO my 2 cents...
suzuki - turning is amazing, everything else is just decent (im currently riding a 13)
honda - overall good package, feels real light, nothing extremely stands out though, handles very well. air forks, PITA. really liked this and would have bought it had it not had the air forks...
kawi - strong motor.. air forks PITA. always was told these suit bigger riders better.
ktm - strong motor, good overall package.. some people still think KTMs feel weird but i dont feel that way...
yz - havent rode a 4 stroke yz since like an 06.. so idk. theres plenty of people that love them.