I hate those cheap EMGO brand mirrors. Their finish does not last, they are floppy, and they just feel cheap. I paid the $$ for Napoleons, and am happy with my purchase. IF you keep your eyes pealed you can find cheap used ones on evilBay. I buy them damaged and fix them or keep them for parts. Using this method I bought my last pair for about $10 + shipping.
Go for the good stuff, unless you are a cheap a$$, then do what ever you want.
-fang