what will yield more is my main concern

Yield depends on the bark and how well you perform the extraction, not the extraction type itself.

really? then what truly is the difference between an A/B and STB?

The way it is performed.

it really doesnt change anything?

A/B will eliminate some impurities that STB might not otherwise.

I would suggest, based on the nature of your questions, that you spend some time on the DMT-Nexus wiki (including the FAQ page). It will probably address many of the questions you have related to this topic, and many others.

My chemist uses A/B marsfolds tek, but heats the mhrb/lye solution in hot water before doing pulls, has a consistant 1% yeilds of a nice clean product,
happy extracting

STB for first timers!
Plain and simple teks.
Add stuff / extract spice = easy breezy!
Basicly
step 1) add lye to water & stir
Step 2) add MHRB and shake
Step 3) add naphtha and roll
Step 4) pull naphtha and put in small glass (tupperware) tray with lid
Step 5) freeze
Step 6) drain off naphtha
Step 7) freeze
Step 8 ) scrape and smoke!