there is no question.the cen.best bang for the buck.you can find the hyper 8,8.5 conversion kit cheaper since the 9 came out.in my opinion the ofna is the better way ta go.there is parts galore for it .its made better and you dont have to pull start it if you dont wanna because once you go with a starter box youll never go back.but on the other hand if your not going to upgrade things the cen remote is better.but overall its better ta save your money longer and put a kit tagether,its kinda like when people buy motorcycles,they buy a 600cc and its great at first,until ya ride for a while and get better and can only do first gear wheelies an everybody is smokin you and you kick yourself every day and hate it cause u coulda waited and got a 1000cc.