I myself actually prefer AU Walkers with some (and I emphasize SOME) dark tarnish. The details are still there, but the tarnish sets them off. Just my opinion.
It can mean either---the coin may have been dipped by an expert or it could have just not toned---it has been said that 90% of all Morgan Dollars have been dipped at least once. This is where you will need to learn all about cleaning---don't worry---I've been trying to learn for a few years now and still don't have it! Speedy
Holy resurrected thread Batman! Nothing quite like reading a 4 year old thread and trying to figure out who the people are when they've been gon from the forum for years, lol As for the original question, I like both, although I am aware that many of the blast white ones weren't "maintained that way", but were tarnished and then dipped.