I have a pair of Wharfedale Sapphire SP-87s. Small footprint and nice sound. I'm not sure what part of MA you are in but we could probably meet up if you are interested.
The best recordings I have heard are from Sheffield Labs. Harry James, Amanda McBroom, & The Drum Record are all exceptional. (DMP recordings are also very good)
They are all packed up and will go out in the morning. You should have them on Monday. I found an Eva Cassidy and threw that in to. Have a great weekend.
Because my M-500t MKII is in my office I have only used it with smaller speakers. The ones that really stand out are the Spica TC-50's that I currently have set up. They throw a huge soundstage and have near perfect timbre. It sounds very much like a solo cello is in the room with me.
You might like a pair of Polk Monitor 5's or 7's. They have the same drivers but smaller cabinets and no SDA. There are quite a few variations on both but if you look you will be able to find the version with the same drivers as your version of SDA's.
I wouldn't do that. The CRM-2's are VERY good speakers and filtering their signal through an inexpensive (built to a price point) subwoofer crossover should significantly degrade their performance.