My daughters raptor 250 is awesome, not faster than the blaster, but in the trails can hang no problem, Oh and i bought it new in 08 and have had "0" issues even after 10 roll overs all that happened was a few hospital trips and a bent grab bar!
If your young and inexperienced with 2-strokes i say get the 250, regular oil changes, plug changes , valve adjustments and air filters cleanings, you will be golden.
If you want fast, stick with the blaster stroke it , port it-pipe it, bigger carb and reeds you'll stay ahead of the pack!