I went hill climbing yesterday on my 01 TTR 250. Also along was a 00 WR 426 and an 01 YZ 250F. I have to say I was surprised with the TTRs ability and its agility. Obviously the WR walked all over me, (for outright power) as did the YZ. I tell you what though I wouldn't buy a YZ for a trail bike in a pink fit. Some of the hills we were attempting were pretty daunting and consequently there were some fairly impressive get offs. The TTR was a breeze to start again, even after having been dumped big time and flooded to the max. The WR started fairly easily as well, even without the aid of a button. But the YZ was a complete nightmare. It only had to be dropped on its side for a couple of seconds and it would take up to 40 minutes to get it going again.