vBulletin version?

I just bought a 2nd hand license after 8-9 years away from the forum scene.

I used to work alot with vB 3.8.X and before i quit in 2012, i was working with 4.0.7

I recently started again and by research, it seems that 4.2.3 is the best one out there.

Is there any other recommendations or is 4.2.3 my best choice?