Choosing your own personal style is hard, especially if you cannot afford 1:1 session with Anna. To help somewhat with this challenge one can use psychological typology as a guiding principle.
For years the psychological typology has been measured for purposes of career selection using MBTI or big five OCEAN indicators.
There is some correlation between personal style and MBTI indicator, which I will try to outline based on my teaching experience. Please notice that I am INTJ, Jonathan is ESFJ and Anna is ISFP, so between us we probably cover the whole spectrum of traits.
Mindmaps vs mental palaces. Intuitive types prefer mindmaps, while sensing types prefer mental palaces. Intuitive types often get lost in mental palaces or cannot get a clear image of an object. Sensing types need something tangible to imagine, so they often cannot quite grasp the abstract structures and stylized markers.
PAO vs major system. Extroverts love PAO, where they interact with various action figures within their palaces. Introverts often prefer objects generated by the major system or Dominic system, since they do not generate over-excitation.
Personal/creative vs logical markers. Feeling types need to personalize their markers, adding smells, childhood memories and other touchy-feely elements. Thinking types prefer logical and stylized markers since they are clear and do not overload their senses.
Time limited vs retention limited training Perception-oriented students tend to be overfocused in their markers creation. Speeding up is the key to making their markers truly useful. Judging people often try to speed up the processes and may lose retention. So the key of training judging people is slowing the training so that the retention does not degrade.
I really hope you can understand what is your dominant personality type and choose the relevant personal style. No-one is clearly one type over the other, but we have different qualities from different types. So it makes a perfect sense to learn more than just one method.