Oh, I see. Thanks for that link. Back to googling.
I like the look of the BH-40, but after exchange rate changes and shipping I'm not sure it's in my price range. It's obviously better and lighter but I guess that's why it's exactly twice the price of the manfrotto.A copy stand will serve you far better than a tripod with the camera pointed downwards, for photographing documents. Much cheaper, more accurate leveling, and fine adjustments of focal length possible. You can even build yourself one if you are inclined towards DIY.Thanks for your reply. I should have said that it's in a library and I've seen other people using tripods but I doubt if a copy stand would be permitted. They have some tricky rules...
For your secondary use, the 055CX is very good, but it is heavier than the Gitzos or RRSs with similar load bearing capacity.
I wouldn't buy a non-Arca Swiss head- it is future proof. Markins, Arca Swiss (without the quick release plate), RRS, Acratech all make excellent heads. Can't go wrong with any of them.
(The Manfrotto MH055MO-Q6 is arca compatible)
I wouldn't consider something compatible if it only works with proprietary equipment. To the best of my knowledge Manfrotto Q6 doesn't work with RRS, Wimberley, Kirk, etc. Please see link below for explanation:
I wouldn't use a BH-40 with the 400/5.6. RRS is more expensive, you might want to try Kirk, Markins, Acratech, buying used, etc.
Which models should I be looking at? (It will mostly not be with the 400, but it would be good for that to be a possibility.)