I have the Photoflex Transpac Single and its a great light case for location use. I have three lighter weight and shorter lightstands with it and save my heavy duty stands for the studio. It comfortably fits 3 stands, 2 umbrellas, 3 AB800s, and cords and clamps and fits across the back seat. Its can also check it as airline baggage without overweight/oversize fees.
Vistek has the Photoflex Transpac Dual which I'll be grabbing tomorrow when I can order a few other things on boxing day sale. 179 at vistek is actually cheaper then BHPhoto which is a bit of shock.