Re: New & need advice, questions answered etc...
there are inframe 2 strokes made in italy called morinis, thing is you can have 4-5 chinese kits for the price of 1 morini, and you don't get a full kit+ you have to do tons of custom fabrications, simply put it's not a beginners motor.
there are tons of replacement parts for essentially all brands as most of these motors are pretty much the same. but for the most common brand i'd say grubee.
as far as warranties, iv'e never bought motors from either of these sites, but bikeberry seems to offer a pretty good warranty once you complain here on the forums from what iv'e seen.
the other site is piratecycles1.com i haven't bought a motor kit from them, but small parts i have and their customer service was great for me, so i'd be willing to give them a try.