tango technique for different tango shoe heel heights

I've heard it said by many women that the follower should dance in all heels - from no heel at all to stiletto - to get best technique.
I've actually seen a few really advanced dancers dance tango with flat heels but have their heels artifically high, ie as if they had heels on.
So my questions are:
1. Should a follower try multiple heel heights - does this actually help in performance?
2. Is their an optimal heel height at all?

My two cents on the matter: yes and no.
For slightly more detail to my answers ;)
1. I'm not convinced that trying multiple heels will do anything, other than confuse your body. That's like a runner trying various types of shoes to improve their running style (ok, a bit of a long comparison, but you get the point...). Not done. Hard enough adjusting to each individual lead style, without throwing in yet ANOTHER random variable.
2. I think the optimal heel height is simply the one that is comfortable for the follower, as simple as that. Some followers love really high stilettos, eg because they are shorter or simply because they love high heels, whilst others prefer smaller heels.