140 is one of the most exciting divisions in the sport.

I think Bradley is clearly the best, and if I had to rank the top fighters in the division it would probably look something like this:

1. Bradley
2. Alexander/Khan
4. Maidana
5. Kotelnik (or JMM if he chooses to fight at 140)

However, any of the top 4 could turn out to be the best fighter in the long-run. I'm less sold on Maidana than most people are though.