The Delos does more things right than a lot of much more expensive cartridges.
Some dont share my view about the Helikon which I prefered to some more expensive Lyras, it has - or had - a tonal Balance which is very rare. Even today with lots of super expensive cartridges. The Delos has comparable Detail and Attack with a rich amount of tonal Details. I think, this impressed me most. Very rare to hear, no matter how much money you spend for cartridges.
Not colored like a Koetsu, it can give you a good impression from the Soundstage, it can produce a three dimensional image with a very transparent midrange. A lot of cartridges bloat some frequencies (some think that is similar to full, but that is a mistake), this one not. It does not level all records with a kind of sonic fingerprint. It is very honest (depends on the rest of your System of course) and it has a VERY rare combination from smoothness with fast analytics.
In my opinion, one of the outstanding designs of today from price/performance ratio. When it is in your focus, there is worse out there :-)