ATCs are phenominal speakers when powered and set up right. They need a ton of power - far more than the Marantz you're using. I've heard Naim seperates struggle with them. Unless you're willing to buy at least 200 watt monoblocks from companies like Bryston or Pass, I wouldn't go near them. They sound way too dull and uninvolving.
The Paradigm Studio 60s should also be powered with a seperate amp, but they don't need what the ATCs need. I used to own PSB Image T55s. They were very good, but not as good as the Studio 60s IMO. They're a bit easier on an amp, so that may play a role. I powered them with an NAD 320BEE in a small room with no issues.
PMCs are pretty similar to ATCs. They're far easier to power, making the lower end of the range more appealing to me.
If you liked the Vandersteens as much as you say you do, I'd stick with those. They're excellent speakers. If buying second hand, pay close attention to how much they'll cost to ship. They get pretty heavy, and need multiple boxes - 2 speakers and 2 stands, all individually packed.
If you liked the Vandersteens as much as you say, why not go with those?
The Paradigm Studio 60s should also be powered with a seperate amp, but they don't need what the ATCs need. I used to own PSB Image T55s. They were very good, but not as good as the Studio 60s IMO. They're a bit easier on an amp, so that may play a role. I powered them with an NAD 320BEE in a small room with no issues.
PMCs are pretty similar to ATCs. They're far easier to power, making the lower end of the range more appealing to me.
If you liked the Vandersteens as much as you say you do, I'd stick with those. They're excellent speakers. If buying second hand, pay close attention to how much they'll cost to ship. They get pretty heavy, and need multiple boxes - 2 speakers and 2 stands, all individually packed.
If you liked the Vandersteens as much as you say, why not go with those?