No t_e_p, I was led to AVC by an Audiogoner who showed their platforms in his Virtual System pics. I’m a fan of Baltic Birch, so what’s not to like? ;-) However, I have sent two emails to AVC, neither of which has elicited a response. Not a good sign.
This is just my opinion, but I think a Baltic Birch platform (or a sandwich of BB/granite/constrained-layer damping) with a set of Townshend Audio Seismic Pods (or Machina Dynamica Springs) underneath will outperform the Symposium Acoustics Segue ISO Platform, good as it is. The reason? The Segue ISO’s design is a shelf comprised of outer skins of a very thin sheet of stainless steel, with a layer of foam between them. On the bottom of the Platform are five springs, available in two weight versions. A pretty good design some may argue, but the thinness of the ss skins and the foam between them doers not align with my notion of what makes for a good turntable (or digital player) platform. As I said, just my opinion. The design of the springs looks good, but nowhere near as sophisticated as the Townshend Pods. Plus, the Pods are offered in far finer graduations of weight/mass capacity.
And of course none of the above is as good as a Minus-K or Herzan isolation platform. But then, they aren’t priced at over two grand!