I have a Bat VK30 which works great with my Aerius Is. I'd try to getthe newer bat stuff vs. vk3/5 - the newer pieces are better, esp. the user interface. classe CA200 is my amp, which works well and has no faults I can find with it. I have also tried other combos (including Classe 30 preamp which I own) and this has worked out quite well. I am bringing home some Conrad Pr5 monoblocks soon to see how those work out well, and I have a 47 lab gaincard on the way too. BAT vk200 is a nice amp certainly, I liked it - but not enough to swap my CA200 with it. I think Bat's best stuff is preamps and maybe their CD player. Their tube amps are nice too, as are their solid state amps, but their preamps are the real stars (IMHO). Re: the aerius limiting your system - not so. With a good sub (like the one I have that I built myself) I'd stack these up against any of the larger ML stuff (up to the Prodigy level). I have also done extensive auditions of other stuff (much in home, same system, some in store) and the Aerius hold their own. Nothing like panels for a really stunning open gorgeous sound. I'd take them over the Watt/Puppys, all aerial under the 10Ts, and the JM lab stuff up to and including Mini utopias (have heard it all). Also better than the myriad of less speakers I have had in house. The only thing I've heard that I consistently want more than the ML stuff is the Avantgarde Duos. SL3s are nice btw, but not worth the difference. Just get a good sub and you will have better bass (and tighter/faster mids) than the Sl3s no problem. -Ed