Gotta chime in here...
Quick disclaimer first:
1. I own a few Medi-figures (just SW stuff)
2. I own more than a few SST figures as well
3. I don't think I'll be getting many more Medi-figures (becoming too costly, and I'm not digging them that much)
Having said that, I don't see where your statement of "taking advantage" is coming from TNM... the man asked for advice and insight, and was provided with both, some positive, some negative. How is pointing out to a great deal (considering the original cost of the figure) a bad thing? Just because you yourself don't like it? If somebody really likes SST's Ep. IV Leia and finds it for 30 bucks, he's wrong to point it out? That just doesn't make sense.
As for me, although I'm not a big fan of the SST Maul, I like it enough not to feel the need to get another one.
And no, I don't like displaying the Medi-figures with the SST ones, the style is way too different IMO, so I keep them separate. The height issues also prevent me from doing that, but from both points of view. SST figures are usually melon-headed, so they tend to look funny when displayed next to others with better proportions.