I currently have a 2005 trx450r, which i'm trying to sell in order to buy a dirtbike! The only experience i have on a dirtbike is when i had my kx85 for a few months. I'm debating on whether i should get a crf150r or crf250r to start with. I know the 250 is big, and has a bunch of compression at a ratio of 13.2:1. But what do you guys think?