By all means take your M22's to your bro-in-law's. You may be surprised by how good the 22's sound in comparison, and your upgradeitis may go into remission. If this does not happen, then using your M22's as rear channel speakers would probably sound awesome if you listen to much multichannel audio, otherwise they would be overkill. You could always keep them for a second system, say for listening to music only in the bedroom, or sell them on Ebay.

Mark

"Shoot, a fella could have a pretty good weekend in Vegas with all that stuff"