Only trust promoters to book a tour for you with whom you've worked closely in the past, especially when taking calculated risks with your band's hard earned cash.
Promoters get a very bad rap for screwing bands out of money.
Some of them are actually goodhearted music fans who want to support the local scene regardless of whether they will make any money on a show. And some of them make a very good living in the process. And when promoters lose money, they usually lose WAY more money than the bands do, depending on what size show we're talking about. Then there are those greedy, evil sorts of promoters, who care ONLY about making money, and who don't care not about the music at all. They know who they are, and if they are reading this, then they know that they will burn for all eternity.