I've only heard them both at shows (twice to three times each). Like them both but find the Aural Acoustics Model B even better: much more coherent; better imaging and highs with superb resolution. Easy to drive: I use a CJ MV60SE (60 wpc). $4500 list.
Looking for a new speaker: VR 4 Jr vs. Hps 938
Just sold my Monitor Audio GR20 speakers and I am planning to upgrade. I am in the $4,000 range and the Von Schweikert and Hyperion are in the top of my short list. Any recommendation, ladies & gents? Oh, one more! I only have a 60 watt tube amp - a BAT VK60.