Hi, I am fairly new to studio shooting. I have played around wiht my 3 light umbrella setup and am ready to play with some softbox shots. As usual, the prices of softboxes are all over the place. I see some cheapo ones on ebay. I see some very high priced ones on many sites. What is the key to look for when shopping for one? Any particular brand a better solution than the others (Considering quality vs price)?