My thoughts...The bag amp showed more detail, especially with acoustic guitar..it was clearer and more up front..

The Bose and Solo were very similar...The Bose lacked more in the full range of frequencies, same with the Solo..

If you listen to a Bose with the Edirol M-dx10 mixer..you would hear a combination of the Bose and Bag amp..full frequencie range..

The sub plays no part or very little with the guitar or vocal range of the demos..

If I was a guitar player with average vocals..I would prefer the Bag amp..followed by the Bose...

Being a keyboard player, a sub would help all three units...Personally, I would pass on all of these..I want a 3 way with 15...and two of them