I have heard both the Focus and the Aeris as well as the Tekton Double Impact.
The Focus compares to the Tekton DI, IMO. The Aeris is on another level. It is a special speaker. The Tekton Ulfberht is also supposed to be a special speaker for less money, but I have not heard it.
The Aeris has an open plenum for the highs and mids so even though I have not heard the Ulfs, I would have a hard time believing they could compete with the openness.
I really think you need to listen to them all yourself.
The Focus compares to the Tekton DI, IMO. The Aeris is on another level. It is a special speaker. The Tekton Ulfberht is also supposed to be a special speaker for less money, but I have not heard it.
The Aeris has an open plenum for the highs and mids so even though I have not heard the Ulfs, I would have a hard time believing they could compete with the openness.
I really think you need to listen to them all yourself.