Best Version Of Vbulletin Forum Software

Vbulletin was the one top software for building forums, but once it sold to new owner and its majority gone down. I like the version 3.7 that was my favorite to have it on site, also heard a lot from other people that love same 3.6. to 3.7
How about you all and do you still like to use it on...

Best Version Of Vbulletin Forum Software