Nokia

Ok so i got 2 questions. Do they still make Dt125 series ? Cause i can't find it on the manufactures list and i can't find it on our local distributes site. And the other question would be, why i quoted this, is 2 stroke better than 4 stroke? cause my friend said 4 strokes last longer, but i can find post everywhere about 2 stroke owners picking on 4 stroke owners.