Re: best mono pod
B&T Industries/Accu-Shot...'nuff said! As to the specific model that meets your needs, have a look at their site and pick the best size/model for you.
Also, now and in the future, you should try running a search using the search engine linked in my sig line. You will find plenty of info on Accu-Shot and the various offerings for monopods.
However, before you drop the money on a monopod, you might try a quality rear bag first.