I'm in the market for a flash modifier/diffuser. Mainly intended to be used together with a SB900 for indoor shootings (events, portraits etc). Especially when the ceiling is too high or no white color walls nearby where bouncing it off is impossible, and direct flash would be too harsh.

Demb Flash Diffuser Pro or Gary Fong's Collapsible Lightsphere?

Any other recommendations? What do you guys use?

I use the Demb and I also have the Lightsphere, but the fake version of it 

What I can say is that I prefer the Demb over the Lightsphere. The Lightsphere wastes too much power and when shooting events, that's not good. But I will say that the Lightsphere produces slightly softer flash as compared to the Demb. But for events with high ceilings, the Demb is unbeatable 

that day sifu eddie putera brought along his honl speed snoot, looks pretty interesting.
http://www.honlphoto.com/speed-snoot.html

Was considering that one too before. Thanks for the heads-up. I'll ask about it from him then. TQ bro!