The new VX-IIIs have about 98% light transmission, which is just outstanding. A typical 3.5x-10x-40mm will cost about $500. Hard to imagine - Zeiss, Swarovski, or otherwise, - to spend an extra $1,000 to only get an extra 1% - maybe 1.5% - light transmission. Granted, light transmission isn't everything, but it says alot about the quality of the optics themselves. The upper-end German scopes have 30mm tubes, which really don't contribute much, if anything, to light transmission.
Let's just say that a $1,900 VX-7 is starting to make a VX-3 look pretty darn cheap!
Zachary