QTDragon and Versa Probe

Does the term VersaProbe only apply to the brand or probe or are the chinese-knockoffs included?

Additionally, what's the real difference between Basic Probe and Versa Probe in the QTDragon interface? Anyone know?

Versa probe is the Qtvcp version of the original Verser probe inteface written by Verser.
github.com/verser-git/probe_screen_v2

AFAIK Basic probe is based on the pyqtvcp screen probe basic.

They were then modified/developed to use common probe routine code.
Persei802 (Jim) did most of the work combining the code bases all of the work creating basic probe for Qtvcp.

They are mostly the same for work probing.
Versa Probe supports auto tool probing (bt adding remap code) and some new tool length probing routines.

Not sure what you mean about the actual probes - any brand probe that can output an on/off output to linuxcnc could be used.

Chris thank you, you've answered all of my questions and suspicions.