Which is the best bike and why?
There is no such thing as a best bike. Different bicycles are
made for different purposes. For instance even the best racing bike
will not be suitable for rough terrain riding.
You need to decide what sort of riding your are interested in
and then select an appropriate bicycle.
To elaborate on what he said, sort of. If you are into road
biking, racing..you know, the "skinny tires", then there are many
beautiful bikes out there. I'm 15 and ive been racing for about 4
years, and i have been through about 100 bikes. The one i currently
am riding, is probably the best bike i have ever laid feet on. It
is a canondale, Caad9 1. It is arguably the best bike frame built,
it has the lightest crank in the world, legitimately. You should
explore your possibilities, buy a bike that fits you, buy a bike
that you are comfortable with. But i would highly recommend riding
canondale, they are the best bikes on the road.