Mirrors

This may be an old topic and I hope it does not reflect badly on me. There used to be some very nice Myrrcle mirrors that worked on old style Shimano STI shifters. I have been looking for a replacement for those.

Zefal appears to have a large bar end mirror that appears effective. Any experience with these or another good mirror? Preferably for use with drop bars.

Mirrors on the Zefal page