i've got i couple of questions regarding the accessories. inicially i just wanted to order the pa, since they only seem to sell it via their page. as i saw the new additions i thought, i might as well enlarge my shopping list, with christmas around the corner. i've allready got the original wpa, now i see, there is also a different one with a tube. can somebody explain me the pros and cons of both? further there is the new grinder, which has this usual classy appeal of the mflb products, but does it really do it's job better then a nano grinder?