Jitter reduction, best device?

Wow. Appreciate the responses, email included. Though I won't be getting another dac anytime soon, I'll keep the above recommendations for future reference. So has anyone ever published comparisons of the various devices that reduce jitter? From the reading I've done and the posts in this thread, it certainly seems that the digital lens and the meridian 518 are among the best.

Again, thanks for the responses, this has really been a pleasure and an education. I recently acquired the MSB Gold dac and yesterday I flipped the upsampling switch. It made a big difference in reducing the the edginess of the sound.Prior to the msb I just used an M-Audio Audiophile usb dac connected to my computor. It sounded significantly inferior to my cd player so I hardly used it. Now the computor, with the msb, upsampled, in the chain sounds far better than the cd player. At this point Im wondering how big a jump in sound quality an anti-jitter device will make. If the new more expensive devices will make a substantial improvement I'll patiently save my nickels and dimes (as well as my marriage!)and get one in the hopefully not to distant future. If nearly the same improvement can be gotten with a used older device for less than half the price of the latest available I'll be impatient and get one now. If, on the other hand, adding another device in the chain won't make that big a difference why add an anti-jitter device? Obviously I'm a newbie at this and have done just enough reading to be dangerous.....but hey, you gotta start somewhere......Thanks in advance for any more replies that happen here.