Advice on speakers for a vintage system


Help. I recently took the plunge and had my father's old McIntosh setup completely refurbished (thank you, Circle Stereo). It's a pair of mono blocks, MC-30s (30 watts continuous output), and an MX-110 preamp. Now, I need speakers to run them through. I'm an audiophile newbie and don't know much about power demands, crossovers, etc., so I'm asking you experts for recommendations about minimum specs and possibly brands of speakers. Can any of you take pity on a novice and give some advice that a neophyte could follow?
tfsd
Klipsch speakers is the way to go, vintage models only if you want to hear what the 30's can do. Enjoy the music, he would be proud.
I use my Dynaco MK3s with AR-90s. I listen to alot of classical music and rock and roll.
Thanks to you all. This has been very helpful. I'm really looking forward to seeing what comes out of these babies.