Scott,
Read the reviews here on audiogon. Also, Paul modifies these preamps once they hit the states. Buy what your instincts tell you but, as a fellow Vandersteen owner I am just letting you know that this particular preamp is a good match. Also, Paul does offer an in home trial. Contact him for specifics. As far as Chinese components there are several companies offering very fine quality for your$$$. Remember that labor is quite a bit cheaper over there and this could translate into more bang for the buck.... If you are listening to 60 and 70's rock, you need the Pre to be able to separate the music so that it doesn't sound compressed. The TAD-150 has a huge 3D soundstage. Curious to see what your final decision is.
Eagleman