I have and use the Phottix Strata II Multi ($100). It works great for me and has a hot shoe on top of the receiver to mount your TTL flash. There are a few other manufacturers out there however so listen to the other forum folks who post and make your decision. I am very happy with the Strata II build and functionality.
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol