Cass, if you are happy with the Bose Compact, and it meets your needs ..why complicate things..just keep the Bose..If on the other hand, you would like the features the BA330 gives you, and you are selling off the CM30's...and the BA330 can handle your jobs in stereo and convenience of the built in mixer and effects..at half the cost of the Bose (and Bose is still marketable)....then make the change..

I feel straight up comparison between the BA330 and the Bose Compact...I like the sound of the BA330 over the Bose Compact, but the Bose is more powerful (not by much)..The flexibility of the BA330 is unmatched by Bose...Personally, If I already owned the Bose and was happy with it...I would stay pat...If I was a first time buyer of one or the other...easy choice for me...I would rather have the BA330..Exactly what I did..

Another consideration...you are doing nursing home type gigs...the BA330 is easier to set up and you can carry the whole system contained..unlike the Bose..but you need to find another place to hang your hat..