Well i didn't mean specifically the high ABV would cause the bad alcohols (although I did hear that due to the stress from high gravities and such that the yeast get stressed and produce more bad alcohols, which can be minimized but not eliminated with degassing and SNA), what I meant was that distillers yeast like "super yeast" is a strain that is made specifically to produce an alcohol to be distilled. The standard distillation process effectively eliminates the majority of the bad alcohols. As a result, these distillers yeasts have been cultured ONLY for their high alcohol tolerance, with no regard for how much of the other stuff they produce. And I have heard this confirmed in other places that you can taste the bad alcohols when using these types of yeast.
So instead of using distillers yeast, I will probably use a wine yeast of some kind, which should not produce as much bad crap, but will not get quite as high in ABV