It may be noted that the early Levinson phono stages were designed by John Curl, and are still sought after by audiophiles, even after 20 years have gone by since they were made. I haven't listened to any of the late model Levinson phono stages, so I can't comment on them.
The DL103R is an excellent cartridge for the money, as long as it is on the right arm(of sufficient mass, rigidity, bearing quality). In the view of many people, this cartridge is superior to many cartridges that cost much more. I've personally heard it embarrass many cartridges that cost over $1k, but this should not be construed to assume that it is a contender for the world's best cartridge, because it is not, and at $250 it's not intended to be. But, it is a great sound for the money, and is well worth the cost. There is a certain "completeness" and "wholeness" to the sound of the 103R that is very compelling. It has a character of sound that IMO is very reminiscent of the Shelter and Koetsu cartridges. I've heard it referred to as a "baby Koetsu" and that is not far off the mark.