as for JJP not having price variants or not enough models, have you ever thought that maybe JJP are a Porsche and Stern is just a pov pack commodore?
it seems to me they might be a high end pinball maker,
Funny you should say that I was thinking that the other day, basic commodore (PRO), SS Commodore (PREMIUM), HSV Commodore (LE), Barina (THE home 'toy' PIN)