Hi,I'm looking into getting a HD Rocket and would like some more imformation.I nearly bought a German rocket(more likely than not)which was advertised as a 57 British made one.There's one a few years earlier German made which is the same that some knowledgeable person on here pointed out.First thing i'd like to know is what's the difference between a HD500 rocket and an ordinary one or is it the same thing?I set my mind on an English one because my other vintage gillettes are English except for my fatboy and slim.I'm also English so thought i may as well collect English Gillettes.I'm going to take my time and gather as much info as i can.Is there a particular English Rocket that's considered better and why?Any imformation would be greatfully appreciated because apparently i don't know my arse from my elbow.Cheers.