This question has been posted hear many times, whish 50cc its the best? I do own a DA50 and a ZDZ and a 3W, and on my opinion the DA its probably the best 50cc but if you are willing to compromise a bit and go for a slight heavier engine I would suggest the ZDZ 60 with a supersonic muffler, kills the DA 50 by a long way and you don't have to go for canister to increase performance as some guys are doing.