Choisissez la méthode qui vous parle le plus et essayez de la mettre en pratique le plus régulièrement possible afin que des taches trop coriaces ne se forment pas.
I wonder how it differs in meaning from saying:
Choisissez la méthode qui vous réussit / convient le mieux.
Parler is similar to speak to (in the sense of appeal to) in that case.
to be interesting or attractive : APPEAL
- great music … speaks directly to the emotions — A. N. Whitehead
In contrast,
Choisissez la méthode qui vous réussit le mieux
implies that you've tested the method before and have had some success with it. Parler implies the opposite. Ce qui vous parle is what appeals to you at first sight, on a first impression as opposed to a tested and proven option.
Choisissez la méthode qui vous convient le mieux
(that suits you best) could be interpreted both ways but is more likely to express effective suitability than a simple feeling.
Parler is colloquial for inspirer here:
Choisissez la méthode qui vous inspire le plus…
When you use parler it's like a metaphor, because you don't mean to speak really. It's to ask unformally an opinion.
