So it appears the measurements of this guy are absolutely fantastic but what about the cost to performance ratio? I know there are options like the D90SE you could argue are just as good, if not better, for $900 vs. $3k (for the KTE Holo) but I also have concerns over the quality of the build with Topping products and I like to put my money on reliable tech as well. For the folks that have this or have compared it - worth the cash?