New to SACD--so what do I buy?

Hi folks. Well, I finally went and bought my first SACD player (a used SCD-C222ES). While I anxiously await its arrival, I need to ponder just what SACDs I should buy. I mostly enjoy rock and heavy metal, but I'm not completely afraid of something different as long as it keeps me moving or thinking. Having said that, if you had to pick 4 rock and one "something else" SACDs, what would you recommend? I want stuff that's a marked improvement over the CD release. Pink Floyd's "Dark Side of the Moon" probably goes without saying, so skip that for now (although I really wish "Wish You Were Here" was available as I've always thought it was way better than DSOTM!). Here are some possibilities based on my early exploration of available titles. This may give you a better idea of what to recommend:

Blue Oyster Cult: Agents of Fortune
Deep Purple: Machine Head
Peter Gabriel: Up (I've never even heard this on CD!)
Aimee Mann: Lost In Space (never heard this either)
Aimee Mann: Bachelor No. 2
Steely Dan: Gaucho
Flim & The BB's: Tricycle (but can it get better than it already is?)

So, what say you?

Butch