Acoustic Zen VS Definitve Speakers

dynamics on the powered defs are really good for HT and heavy dynamic source material. Unless the AZ's are active/powered, or super high efficiency, they're not gunna hang with your Def's for slam factor, that is certain - especially if you run a receiver system.
I like the Def's with smooth sounding gear mostly, especially tubes, to be tricky.

Iplaynaked,

You say you like the Def's with tube gear. Which gear do you like.

I currently run a Integra DTC 9.8 with an Anthem A5 amp.

i have only listened briefly on the def tech stuff, but own a pair of the adagios. i agree, if you think you want music only system, and have the space for two setups, get the adagios. they have a great sound and for prices at or near 2k used, are a true bargain. for movies and dual use, just keep the def tech system. the adagios are a special speaker in this price range. beautiful in the burl wood.