Back from a munch and a trip into the loft for a Lastolite brochure to get up to date

and the thread has been busy.
Foxys brolley is the best option for general subjects.
Silver brolleys give a harder light so good for engineering type of subject, I will look in my gallery to see if I have posted an example.
Gold is generally the preserve of portrait photogs as it gives nice addition to skin tones.
Shoot through, although softer looses a lot of light, and is not so controllable. I will do a diagram. You also have to be aware that on reflective surfaces the brolley arms will show up.
Don