...the Busa is hardly the "best" motorcycle...it is mearly the fastest stocker...the last thing you should be seeking...you will only look foolish trying to cope with it, if it is your appearance you are concerned about...there are many light wight, more nimble bikes that are just as cool and more appropriate to a new rider...over at LABusas.org we have had many peolpe, myself included, post about bikes we have that we like as much or more than the Busa, in my case a Suzuki DR Z400S, a bike I would highly recomend to you, if it is not too tall for you...a dual purpose bike would be tha way to go, if your ego can handle it, and you will very likely want to keep it when you move up to a larger street bike...they can be a bit tall, however, and two things that will help you do well are a light wieght bike and the ability to easily reach the ground with your feet...both of these considerations can be metigated as you aquire skill, so being a light wieght or short legged does not mean you can never ride a tall or heavy bike...just don't start there if you wish to rapidly progress and have an enjoyable experience...you can do $1000 damage to a Busa just dropping it on it's side in your driveway, and this is easy to do, and the situation only worsens from there...I dumped a DR 650 SE three times last year, and the total repair bill was $250, and this was just to keep the bike looking well, rather than to repair function...that would make a great street bike with some dirt capability throun in, and can be lowered over 1" without shortening suspension travel...I sold it and got the DR Z400 to get a better dirt bike that could still run well on the street, but the DR 650 seemed like a better street bike, although too big to get rowdy in the dirt with...you can go just about anyplace at a moderate pace, though, and the bike seems MADE for dirt roads and bumpy country back roads...urban situations suit this type of bike very well also, as they are very light and nimble in traffic and can soak up bumps that would trash most street bike, and they are tall enuff to allow you to see and be seen as well...
...there are lots of cool light street only bikes as well, and I would check out the Suzuki SV 650 twin if you want a street only ride...It has no fairing, but is very sporty and winning lots of races at the track...it is light and cheap and works very well, and you will not look like an idiot poser who is in over his head on it...squidly types who are best avoided may poke fun, but any knowlegable rider will nod with approvel at such a selection...