Proceed, Aragon, Levinson, or other?

I am interested in a 2 ch. amp, I have a Carver AV505 AMP, a Marantz Pre-Amp and Energy C-4 speakers. I want an amp for both music (From Metal to Jazz) and movies. I am considering the Proceed AMP2, Aragon 4004 MK II, Acurus A150, and others. I want an AMP that will be a considerable jump over the Carver, a building block for future formats (7.1), and be an AMP that I won't want to upgrade for a long time. Are any of these listed in that ball park or should I save up for a while and get a used Levinson? I am having trouble justifing the money for a Levinson. If I buy a Levinson in the future, I won't have any money to buy the components to go with it. Any recommendations?
Thanks in advance.