650cc and 600cc are different bikes.
blade 650r and yamaha r6 are totally different bike altogether.
tho they are of similar engine size but, the power they deliver is not the same.
power evolution can be concluded as follow:
250 -> 400 -> 650 -> 600 -> 1000
for beginner bike, Id suggest something that is cheap. Because, when u fall, or the bike fall, it wont hurt your pocket much, but it will certainly hurt your physical.
Blade 250r suits well for beginners. Infact, Im looking for one.
not to hurt the ninja250 riders out there but, its overpriced. They are assembled in Malaysia I suppose? But why the expensive price tag. Heck, Blade is also assembled in Malaysia, but the price is alot cheaper.
in the US, hyosung 250, ninja 250 and cbr250 are priced almost the same with hyosung 250 being the cheapest 500 (more or less) fully imported.
the thing is i don't like 250cc sound,like kapcai 1 de,not my type...
600/650 sound i loike,but the price and maintenance sigh...
i've search youtube and i found 250rr,fuuuuu engine sound like f1,rpm almost 18k wtf meh,this i loike but not available in malaysia............