I have not heard the Classe CAV-180 but Classe has very good amps with a warm sound.
You can pick an Aragon 8008X5 (I had one) in the use market for $2000-$2200. It is an incredible amp for the money. Very powerful, dynamic and smooth at the same time. Also, you can get a Krell KAV-1500 (I have now) for $3500-$3800. This amp is even more powerful than the Aragon. Either one, the Aragon or the Krell will match very good with your speakers.
You can pick an Aragon 8008X5 (I had one) in the use market for $2000-$2200. It is an incredible amp for the money. Very powerful, dynamic and smooth at the same time. Also, you can get a Krell KAV-1500 (I have now) for $3500-$3800. This amp is even more powerful than the Aragon. Either one, the Aragon or the Krell will match very good with your speakers.