Maggie 1.6 vs Von Schweikert VR 4

OK, I am going to chime in. For more "slam" try more power. Byston makes great amps, you would be surprised at how much more slam you could get by moving up in the Byston's, to the next power level. I had a 14 SST with my Maggie 1.6Rs and I couldn't believe how much the lower end tightened. Also, adding the excellent Vandersteen 2wq (or older 2w actually), is a great way to augment the Maggies.

That said, I really like the Von S's as well. Great speaker, detailed, open, definitely more of a "Slam" factor. Try the Vandersteen 2ce Sig as well if you want to move away from Planars. Or a hybrid, such as the Innersounds (I like the older, rather than the newer models), or there are some very adament fans of the Eminent Technology speakers.

Good luck.

If you go to a sub for music only to match with Maggies I would recommend the Vandy sub. Best match in my opinion. But I own a Velodyne DD12 because I use it for movies as well and I don't have a perfect room. The Vandy is great though, super fast.

Part with the planars, test the waters. But you will be back, that's what I did. Once you go Planar, you never go back.