Board Thread:Roblox help and discussion/@comment-36411031-20180731212717/@comment-5903643-20180802133218

If you haven't had and experienced BC before, I would recommend the cheapest tier, BC. If you've experienced good ol' BC before, try TBC.

Yes, OBC gives you the most Robux, but as Shineman said, it's not really worth it, unless you're a game developer (DevEX is only open to OBC).