Welcome aboard Cdy.
Which Yammie do you have? The 1800 and up seem to work well with 4 ohm loads from what I have seen.
The Axioms can do that, in your face feel, and the M60's are a great speaker, most of us have just come to the conclusion we get upgradeitis way to easily so we went for the M80s as the first or second Axiom purchase. I had the M60s for audition but I found them to lack the forwardness of my M22s(which appear to be more forward than the present M22v2) the M80s were a closer match so I ended up with them. You could always do as I did and try the M60s and if they are not what you are looking for return them and try the M80s, this 'upgrade' is free shipping as well, you only pay the price difference between the M60 and M80.
You may also want to check the Hearing things section to see if there is anybody nearby that could give you an audition.
