You've got a keen insight into selecting speakers. Your budget doesn't. Would it help if you had a couple hundred dollars extra to give to each speaker? Or for a large event, maybe a couple thousand bucks? I propose it would be in your best interest to start working with Flattr now.
If a certain speaker is greatly appreciated by the audience, Flattr enables your delegates to decide how much money to give them. We're not talking about charging your attendees more to participate in your event; we're talking a very democratic system to reward the speakers (and even peers) that add the most value to an event.
This is but one possibility when meetings and events embrace Flattr, the microfunding platform co-founded by Linus Olsson.
Read our November story about Flattr and Olsson with the official One+ iPad and Android tablet apps or grab this PDF.