First off: Welcome to the winners circle
At the end of the day, I think it all comes down to this. Budget v. Competitiveness
Whatever way you slice it, I'd choose the KTM. Straight up. Why? Because when it comes to the crunch, you're going up against bikes that not only have a fair wad of a horsepower advantage, but are a mile easier to ride. You need all the power you can possibly get. Yes the Katoom has been plauged with suspension woes, this is plain truth and the YZ has beautiful suspension. But save for a few months and you'll have the money to get it dialed in right and as good as the YZ if not better. But now the KTM has a horsepower advantage over the YZ and its suspension is on equal grounds (roughly). I'd spend the extra money and get the katoom honestly.
The YZ costs 3000 euros, so that gives you 1000 advantage over the Katoom in the money department which most definitely gives you some wiggle room. I'm not too familiar with the status of the euros but thats about 10 top ends I'd guess.
Don't get me wrong the YZ is a fantastic bike, but you'll need a major skill or terrain advantage (the latter being extremely rare these days) over your competition if you wanna hang with the 250Fs. Thats my experience anyway. Bone stock KTM will still have a HP advantage over a modded 144 I think, don't quote me here I'm just gauging roughly. Or they'll be about even. Either way, set money aside for 6 months and you've got another 2 horsies over the YZ. It just seems to make more sense to go with the KTM in the long run. If you can pick up an 09 that would be hot those babies are ROCKETS!
Good luck, I look forward to seeing your purchase
