I am drooling for these as well. Coltrane (self-titled Impulse) is in my top 10 albums (as is Love Supreme). But I'm still on the fence as to whether I'll splurge on the vinyl or the SACDs that will roll out later. There is no doubt the 45s sound better, but they're twice as expensive and I need to get up four times just to hear the entire album...for critical listening that's not a concern but these are among my favorite/most frequently played albums and I often spin them just while doing chores or other things that I wouldn't want to interrupt to turn over the 45. If the Blue Note SACDs are any indication, those will be plenty sufficient.
http://www.positive-feedback.com/Issue44/wolff.htm