I use a little ezybox speedlight thingy. I have my flash with the diffuser cap on and then the softbox whatsit has 2 diffusion panels so it won't kill the soft tones. (or at least it shouldn't). I do like my triflector though. Very simple to use and i can bounce a bit of soft silver light in there if i wish with the opposite side. It's all about trial and error.
Start out with nothing then build on it by adding a reflector, then a flash, then even the flash through the reflector... See what works for you and what doesn't then build on it.
Cheers.