hp12c / hp12c platinum; which to buy

[pattox]

When I searched the HP museum forums I found that the "best buy" suggestions for these calculators referred to the 2 battery (built in china) models which were current in 2015. The most recent versions of both seem to be one battery models. Further, when I looked at the Amazon user reviews the hp12c gets bad reviews, particularly for the keyboard.

The 2 battery versions (2015) were praised for their speed.

What should I buy? Either the current hp12c or plat version? or an older 2 battery model?....