Well, I have a Nitro MT (1), and so does my brother. they are pretty well made. My brother's (being sold), hauls butt. Fantom .15, (a little more power than stock, like 3 times as much), clocked at 43 mph. I have heard the Nitro MT2 with 18ss engine is around 46 mph, claimed by hpi. The fantom 15 with dynamite pipe isn't too bad. maybe a 6, compared to a 4.6 Savage that would be close to a 9 or 10