Last year I purchased the following HTS for my son: Infinity Entra Point 5 HTS Blk 5.1 Home Theater Speaker System, Onkyo 501 receiver, and a JVC CD single disk CD player. This year I would like to begin upgrading this system. I am considereing upgrading the main speakers and thought about the m40ti or m22ti Axioms. Also have been looking at Infinity tower speaker systems. Any suggestions that you have will be appreciated. Another consideration is to upgrade the sound when playing CDs. Appreciate any responses or suggestions.