Yes, I have heard the 3.3. They were too expensive for me so I spent more time auditioning the smaller version (? 2.5i cannot remember model exactly). Quite large - they are very deep - and with that side mounted LF driver, you have to watch out on placement. They have the angled baffle that was trademark of NHT at the time, also putting some restricitons on placement but if you have the spot, they were pretty good at imaging and the FR seemed quite good. Sweet spot was wide enough (or off axis dispersion controlled enough) that you could walk around the room and have pretty good sound all over. Maybe a little hot or harsh on high end, but that is a dim recollection now, and I had spent more time with the smaller one. I think they did use the same components in many of the models, however.