So...it's time for a new top end on my 06 YZ250. I'm debating going with a new OEM top end, gnarly pipe, and an RB Designs head mod. OR, I could scrap that and for about the same money I could do the Eric Gorr 300 kit. I'm looking for that very torquey woods bike that you can ride all day fast without getting too fatigued. No MX on this bike. Thoughts? Recommendations? Thanks.