i think it would be better to find out what category of bike you eventually wanted to ride in the long run when u have ur class 2.
Sports bike? Cruisers? Scramblers? or just plain road bikes?
Then after you have determine your "future"...then u might want to gain experience by riding similar smaller 2B category now so that it will enhance your experience and prepared yourself for the bid bikes in the near future.
If you are not planning to get even a 2A. Just felt like getting a transport bike...then get bike like TA200 or sportsbike like SP and TZM...they are pretty common but there are reasons why it is so common...
if you are going all the way, get a cheap bike to prepare for all the falls and scrathes that will occur. You will not feel somewhat heartpain if the paints comes off after the bike falls when the sidestand is not kicked properly...and stuffs like that...
Hope that helps...just my opinion....