If you want 'gameplan' stuff (how to get the takedown, get control, pass, submit, etc.), the strategy behind the whole fight, I would recommend Sperry or Saulo from World Martial Arts
If you want an overview of level-appropriate material, a survey of what the thinking and doing can be like, than BJJ 201 from Roy Harris is good.
If you want to focus on specific areas of your game, like guard passing OR pin escaping, etc., the individual components, then Michael Jen is the way to go.
If you want to see famous BJJ competitors showing sets of moves, some focused, some not, often what they're well known for, then BJJ Tapes, Island Martial Arts, and like companies could have just what you're looking for.
BJJTapes and OnTheMat.com have lots of comps. I find the whole events often boring as watching paint dry (as many competitors seem happy to score a couple points and then stall to victory), so the remixes, highlights, and other more heavily edited offerings would be the way to go.
Cesar Gracie has a solid fundamental set. good price too.
Island Videos has a killer sale going on. Randy Bloom's "Playing Outside the Guard" and leg lock videos are very good from what i've heard. i only finished the 1st Outside the Guard video and i used some of those moves last night. i especially like the half-guard to taking the back/subs/etc series. the medeiros and diogo sets would be good to get for your collection as well
Depends on your goal:
- If you want to progress from blue to purple: BJJ 201 from Roy Harris and Pedro Sauer from blue to purple are good.
If you want guard game, side control top, No Gi stuff. Basically you just want to improve and doesn't care about belt: Get Baret Yoshida (www.jkdunlimited.com and www.jkd.co.za)
You want to learn from tournaments and practice from them: get from marclaimon.com and bjjtapes.com also 101 submissions
Leglocks: Egan Inoue Leglock bible
Chokes: Burt Richardson Choke Em Series. So much detail explained.
Each range for Gi: Michael Jen all theway.
Overall, try to use techniques that people use in competitions more than just theory from instuctionals. Get the best people that can kick your ass and learn from them. If they don't want to share. watch them and tape their sparring sessions.