I have not heard the W-5, but the BAT is one of the sweetest sounding SS amps I have ever heard. Extremely capable power-wise, smooth, and articulate. An obvious match with the VK-30. The only discounts you are going to get are from authorized dealers who knock off some money. I have seen multiple 500's on theis site used w/ BAT pack for pretty cheap...check it out if you are into used gear. A good used peice generally because it is built like a tank. Hope this helps!
