I currently have the Studio 40 v.3. They sound very good for their price. As regards to the 80 wpc NAD amp you mentioned- that should work well. I was using a NAD 7174PE receiver (75 wpc) when I first got the 40's. My room size is about 14x 18. It was plenty of amplication. I since have moved the NAD to the basement with a pair of smaller Monitor Audio's and currently use a Musical Fidelity a3.2 integrated with the 40's.
A few months ago I auditioned a pair of Paradigm's Signature series S4. They sound much better but are too costly for me at this time. I do not know what your price cap is. They are worth a listen.
A few months ago I auditioned a pair of Paradigm's Signature series S4. They sound much better but are too costly for me at this time. I do not know what your price cap is. They are worth a listen.