David....not too sure why anyone would say "make sure you get the new one"...the one that Jamie shot at N oxon was at least 3 years old and does the business for me and the safety on the new version seems to have a habit of falling to bits ....also the AAs400 is fairly easy to service so there should be no problems with an older one....my only advice would be to ask if its been "tinkered" with.