I hear the term vibrations associated with tripods and wonder why. I have a Slik 804 CF pro series. It is a 4 section very compact/lightweight tripod. I think it is rated to carry up to 12 lbs. (The predecessor of the 814) http://www.thkphoto.com/products/slik/slik-cfs2-b.html This should hold a D2x and a 200-400+BH40-(1lb+3lb+8lbs=12lbs) and function well. But I read that this is not a good setup for this combo because the weight will cause the legs to vibrate. I don't quite understand. Assuming we are not having an earthquake and the winds are not a factor, I don't see any vibration. Now at least for now this is theoretical for me as I am still waiting for my 200-400. But I do use it frequently for my D2x/70-200/TC17 with no problems. There are numerous threads in which folks speak of the new tripod they just bought or want and discuss how solid it is for whatever combo they are using. My thinking is that it is better to bring a tripod that is as close to the capacity as is possible to keep the weight/size ration of the tripod as low as possible. Before I got the Slik, I had only the Gitzo 2228. this is a great tripod and does all kinds of tricks, but it is very heavy/large (compared to the Slik). Frequently I would not carry the tripod or use it just because of the hastle or weight factor. The Slik is so light/compact, it hardly even registers and I will almost always carry it and use it when walking around with a full kit or several lenses. I think that any tripod (assuming it will hold the weight) is better than no tripod under most circumstances. I do use a remote trigger and if it is low light, I will use the mirror up setting, but even just pushing the shutter, I don't normally feel this vibration that others refer to. It feels perfectly still to me. If the vibration is caused by the mirror slap, I would be surprised. It seems that the weight of the cam/lens would offset that at normal shutter speed. (say over 1/30 sec) I would spend the money to buy the most expensive tripod out there if I thought it would make a difference. (I have already paid multi thousands for the equipment that sits on top of it). But i don't see that it makes that much difference and the more you spend, it seems the bigger the tripod (which goes back to the argument that a big tripod in the closet is not nearly as effective as a light tripod under the camera in the field).