Thanks to everyone for the comments and suggestions. I tried the SB3's as mains first, then as rears... They were "alright" to good as rears but as I said, the were not all that great as mains. They sounded harsh and bright. Could have been lack of break-in, poor placement, wrong stand height. I don't know, but I'll say this, if those bugger's had sounded at my house like they sounded at her's they'd have had to pry them out of my cold dead fingers first to get me to part with them.
Not to worry, I'm not done with Klipsch. I've bought some KG1.5's for rears and am looking for a good pair of Heresy's or upper level KG's I realize that this is an "evolutionary" process now and that one is never, ever "finished" or satisfied.
Thanks all...
Da Worfster.