I'm most impressed by my Grace F8 cart by a bit over the NSM sub. The Grace presents my vinyl in musical ways that surpasses previous carts, from Grado wood-bodies to ZYX. When I read about the setup and integration issues folks have with their subs, I feel lucky to have a sub and manufacturer support that was so easy to place and have a seamless sound with Fostex driven main speakers.
Of all your gear, what piece impresses you most?
I like all my gear, yet the single piece that blows me away the most is my phono preamp.