how much do you weigh? if your answer is more than about 150 i'd suggest looking into the 500cc model instead. it's more fun to ride a slow bike fast, but the 250cc ninja is seriously lacking pull for adult sized riders . the ninja 500 and the Suzuki GS500 would both be great inexpensive starter bikes. also if you've ridden dirtbikes for a long time you may like supermoto bikes, but they tend to be a little more on the expensive side compared to the other two i mentioned.