I think the Manley would be a great buy, a new one with remote retails for $3800 used $2,000 all day, the Shrimp was a earlier NON remote version so it was less. The circuit design is very simple and it can drive any amp (200ohm output). Also, The sound is amazing! The ModWright is a great pre amp as well. I have had both in my listening room, the Manley Shrimp is still in my system and the ModWright is in my fathers system. They are both great deals indeed! I owned a Quicksilver pre amp in the 90's, seemed a little cool and dry for a "tube" component IMO. I sold it.
Matt M
Matt M