I purchased some Cary SLM 100 mono amps locally from a very helpful Audiogoner--he answered my questions (and continues to answer) regarding tube amp set-up and maintenance). Bottom line, my Silverline Speakers love these amps. My wife and I can't believe how much more we hear compared to the B&Ks...They have all of the bass of the B&Ks...The instruments are well defined and have life...and those female vocals are something else. I know, you’ve probably heard this before, but there really is no comparison.
I have some tubes on order per the recommendations of Rodman99999 and Tvad. Rodman99999 also helped me in my Cary SLM 100 decision (thank you, thank you, thank you)—being an owner of the Cary 100s, he says that different tubes will take the Cary's to another level.
I do woodworking as a hobby (and for money on the side), and built some 7" high curly grained cherry stands (with two inch thick maple tops) specifically for these amps. With the chromed tube amps and the high gloss amp stands (with wood grain that looks like orange flames shooting upward), my wife loves the way they look in our living room (very important). Thanks to all of you that posted comments for your input. I believe I'm going to be keeping these for a long, long time.