Whatever floats your boat, brother. I do not like (9mm) filtered pipes, with or without the filter. Some people swear by them and smoke prefer a filtered pipe. Some people also like to smoke them without the filters. I am not one of those people, as i don't like to deal with the mess and extra expenditure of the filters and find the draw way too open without the filter. In fact, i have a few 9mm filtered pipes i have been meaning to put up for sale, as they don't get much use for obvious reasons. Either way, if the pipe is not too expensive it might be good to buy the pipe and try the filtered route to see if you like it. If not, you can always sell the pipe and make (at least some of) your money back.