Woofersus. I think you are expecting too much from a small bookshelf. I liked the sound of the studio 20 exept that they sounded small.
Its a shame you didn't go one step further and listen to the Studio 40. They give a much bigger sound than the 20 and much more bass extension. I think the vocals may have been a little more forward and certainly more real.
From a review I read at audioholics, the M22 will be closer to the Studio 40 with less bass extension. They will definately give you a bigger sound than the studio 20.
I personally like what a sub adds to the sound of music and the M22 plus sub will give you much more bass extension than the Studio 40 for around the same price or maybe a little less.
Of couse, you can't go wrong with the M80...
