actually the major difference is the Jim T objective to be flat at the listening position vs at 1m for Richard V. One can debate the merits of both. Until recently i owned both and while i prefer the Vandy, I can understand the allure of increased treble energy inherent in the JT approach.
For those interested , no violin in flat at both 1m and 3 m...... of course if your reference is 32 track studio stuff, keep chasing your tail....