I don't anticipate a sudden rush to change from any of the groups I am in. I don't think my players (and co-players) are eager to buy new PHBs. I would like to take a look at the rules and see, overall, if it appears to be a worthwhile move. I do like the direction the MM seems to be going in. Computer support is important to me, so I will be watching to see how that pans out. And switching, if it does happen, will have to come at the start of a new campaign. So basically I chose "evaluate individually."
Also, another possible option would be downloading the SRD and making the change but not really buying the books. I doubt I would go that direction as I do like to have the rules all together and printed.
edit: about minis -- I like the notion of prepainted plastic minis, but random packs are a no-sale as far as I'm concerned. I don't want to guess if I'm going to have enough ogres or carrion crawlers or whatever.