Radiohead and pricing thoughts

I don't know if anyone told you -- I mean the Internet has been practically silent about it -- but Radiohead is offering Magnatune-style pay-what-you-like pricing (including free) on the digital download of their new album In Rainbows (site is currently dead slow), to be released in ten days. Or you can buy their $80 box of vinyl and extra songs and stuff.

I don't have much to say about the move. Radiohead is in a unique position that's about as far away from most musicians as can be imagined and I'm thinking it'll work great for them.

What's interesting to me though, especially as I try to decide on one myself for the next record, is all the different sales models out there that musicians are using. It's a little overwhelming:

There's giving it away for free and asking for donations, variable pricing, lower-than-retail pricing, higher-than-retail pricing, tiered clubs with rewards, pre-ordering incentives, club memberships, merch bundles, box sets, etc, etc, etc.

How do you choose which one's best?