i have the similar 'classic' approach mentioned above. nardi wheel, stainless mirrors. looks nice on a black spider.
my mirror controls are disconnected and useless.
i have to admit its more often than you would think that my mirror is bumped or not looking out and require manual adjustment. especially due to the fact that the mirror's face is small and pretty slim.
i definitely like them over the S3 mirrors which were clunky and huge. but the S4 has a much more elegant implimentation. owning them right now, i would probably stay stock on the S4 (which im hunting for these days for my lady). especially when factored with the remote adjustability feature that comes with stock.
but the stainless are cheap as hell , and you can always put the old ones back later. so i guess worth checking out!