Yamaha YZ-125 vs YZ-250?

I am 6' 2" and 150 lbs and I have a Honda CRF-230F. I have has this bike for a while and I am getting Really bored with it! I was wondering what I should get next? I would really like a 2-stroke! Should I get a YZ-125 or a YZ-250? I don't race i just ride in an open field. Thanks for your advice!