It is strange that some stores are getting Wave 4 and others are getting Wave 3... but not both.
If you are willing to travel, the Kuraby BigW has heaps of the Destrons, Rallybots, Destructicons and Protectobots.
I'd be willing to swap something with you, as I wanted to get a Dinobot set for Christalcase while he's in Hong Kong for a month (they'd probably be sold out before he gets back). But I have a couple other BigWs near work to check first before I need to get desperate. I can pick up the ones you want if you like, just let me know which sets you are after, and I can meet up with you somewhere or bring them to your house.