PocketWizard Plus III's: More Trigger, Less Cash
I've been putting off purchasing radio slaves for a long long time. Because I know that the cheap eBay ones kinda suck but I don't want to pay for a proper high-end PocketWizard.

Thankfully, PocketWizard has been competing with the cheap imports the right way. Thus, as time goes on, it becomes more and more likely that I'll just buy a few Plus III's to supplant my existing suite of optical triggers.