I'd be more concerned with "quality" rather than "matching".

The VP100 has the same driver complement in a sealed cabinet, but I don't think many would suggest that you should get a VP100 if you can afford the cost and space of a VP150, 160 or 180.

Like Chris and Murph said, if you really want to "match", another M22 is the ultimate.

bibere usque ad hilaritatem