As someone who runs both a Shelter 7000 and Lyra Kleos, I can say w/o hesitancy that I love both. The presentations are much different and that why I love them - Shelter is smooth and laid back while the the Lyra has more immediacy and slam.
Slam and immediacy apart, they belong to 2 different schools. Within the analog domain, there are different camps. The Lyra camp has always been after resolution, frequency response etc, which is a modern take. The old school camp probably value tonal richness, flow and warmth over outright resolution. In that sense if one staunchly belongs to one school, it is difficult for him/her to enjoy the other side of the sound.
The best is of course a neutral no-nonsense cartridge, but thats not easy to find. Kondo IO ?
