@david_ten - Your right about the integrated, makes sense. If a used LM508ia comes up, that would be my choice. Seems value is easier found in used purchases unless the new products are really that good, and I'm not finding used Raven and LTA gear or significantly discounted DI's for that matter.
@lancelock - scenarios to work an LTA MZ2 into the mix will prove expensive but that first gain stage is so important. Noise Figure equations from my high frequency amplifier class are coming back. An integrated from LTA would sure be interesting.
@bullitt - I too share your passion for cars. My twin turbo CTS V-sport, though not quite as fast, can carve corners while sipping the gas. Sinatra hasn't found it's way onto the usb stick yet.