Not personally (there are threads scattered around the net which I have read a while back- thru google), but I saw a quote from Robert White in the UK (Cannot remember where) saying that he thought the 10x8 was the best of the bunch (same as the 5x7 in design, but both different to tehe 5x4). He also said that nothing came even remotely close to it for the price. Comments fo teh 5x7 (which I asked for on this forum) should hold true for the 10x8. Based on the ebony sv810 design, teak (rather than ebony or mahogony), titanium, solid, slightly heavy (6.5kg or so) very rigid, reasonable finish, no indents eyc on movements which are not ebony smooth etc. The 5x7 and 8x10 are a fair bit more than the 5x4 I think (5x7 is £1100 plus 17.5% tax in UK).