Smallish floorstander that sounds good placed just

What about the Ohm Micro Walsh Tall? A used pair should be under $1000. Output is attenuated in the rear, to prevent problems with reflections. Might be a great choice.

I second the Rega RS3 or RS5 speakers. Great floor standers. They have a front facing port on the bottom. That makes them more easy to place near a wall. They are also easy enough to drive with your Nova.

Arros are very good - strengths are imaging and tone. They were designed to sound good placed near the wall, which will give you more bass response and weaker imaging, but if anything, makes the excellent tone stand out even more. Tuning with mass loading is necessary as suggested above to avoid bloated or one-note-ish bass from port reinforcement. I second the Silverline, Rega and Walsh suggestions given above as viable alternatives.

One caveat, I have not heard any of these speakers with the Nova, but feel the Arros have tremendous latent capcity to reward and sound much better with higher end electronics. I have heard the Nova with Sonus Faber speakers and it was a very good match, but would not place the Fabers next to the wall. FWIW.

Meadowlark Swifts are sometimes available used in the $500-$600 range. Good sound and easy to drive. Front transmission line ports.

I recently bought a pair of Rega RS3 and they get my vote also. I have never heard or owned the Arro's and I'm sure they are very good, but I can speak for the Rega's and I enjoy them very much.