I have a crf150f right now and am way to big for it. I'm 6'1 150lbs. This is my first dirtbike. I've had it for about 3 months. I am no looking for a bigger bike. A 125 or a 250 4 stroke. I only ride trails. My friend has a 125 and loves in on the trails. My other friend has a 250 and loves that. Maintaince dosnt bother me. I also want something that would be good on gas so I'm not filling up every hour. What should I get?