astring,
Personally, I would bite the bullet and get the CS-24 standard. The only thing that bothers me is that presently their duets are recorded in stereo, so I was only getting half of the duet. I stuck em in my Cool edit program and converted the duets to mono. Now I get the full duet with my single speaker. I should call Steve Dillon and advise him of that little problem. Sure I could carry a second speaker to plug into the supplied speaker jack, but I am not big on carrying extra stuff along ya know? I am an old fashioned Grandpa who is set in his ways. 
Now Possumal, who is even older than me---he carries enough junk to every stand he almost needs a wheelbarrow. 