What is the best 4 stroke dirt bike?

they r all very close, i rank them as 1. yamaha [fastest, longest lasting, basically bullet-proof, i own 2, one i ran without oil cause i didnt know it was leaking for 3 months it still runs perfectly], 2. honda [put the most r and d in their bikes, they get the most upgrades and such each year] 3. suzuki [just good average bikes] 4.ktm [good, lil overpriced, and they make wierd displacements] 5. last but not least kawasaki [good bikes, but break easy and have lots of problems. unreliable. i knew a guy who spent so much money fixing his bike after a year he could have bought a brand new one]