HP Saturn/RPL based machines against new wave Applet/BASIC based machines
HP-50G Saturn/RPL against HP-39G+ Applets/BASIC
HP-50G Saturn/RPL against HP-40GS Applets/BASIC
HP-50G Blue, HP-50G Black and HP-49G+ Saturn/RPL cosmetic variants
All together now:
And the 50G little brother, the HP-48GII: