So, I'm a bit behind on my Dragon Ball Z.  I enjoyed most of the series.  But I don't like it enough to buy every single fighting game that came out with its name on it.

I was wondering, which Dragon Ball Z games are the best?  Maybe top 3 would be best, and the pros and cons of each?

 I noticed there are DBZ: Budokai and then DBZ: Budokai tenkaichi and etc.  Whats the differences? 

Do they all have a good amount of characters? Combos? Transformations? Super Saiyajin?  Flight? etc?

This would really help me out.  Thanks guys.