I am going to upgrade my monitors and am looking at the usually brands; Mackie, Adam, Genelecs and Dynaudio. Very curious in the Dynaudios, do any here have any experience with them? I am looking at either the BM6 or 15 series and then the active verse passive versions. I would like the BM15 but the active versions are $1500 more than the passives. Has anyone compared the actives verses the passives with Hafler or similar amp? Same question on the BM6? In general I trust that the Dynaudio engineers are best suited to match an amp to their monitors and would think the actives are the best choice. However, I was wondering if any knows how great a difference if the passives where matched with a quality amp. The cost between a set of BM15 actives and passives with a Hafler P4000 is about $900. The difference on the BM6s is much less, in the $300 range. I hope to be able to be able to AB them myself, but the only place that has the series brands I want to check out is a couple hours away and I am not sure whether they will let me test several amp setups.