Cartridge (other than Rega) with Rega RP10

Thanks for your comment, chakster. I understand your point of view, but In my 45 years listening to a wide variety of audio equipment, including cartridges, I have found none to be "absolutely neutral." Every component has a different way of presenting tonality, scale, force, momentum and a variety of other aspects of music that can be described.

@ladok this is one of the reason no one can tell you which cartridge is the best for your setup if another user setup is different, right? 

As for the neutrality of the cartridges it must be compared to the master tape during disc mastering process. These guys did it, read it. 

The Lyra Delos is a wonderful sounding cartridge. Dynamic and natural sounding.

Ladok, sorry especially one responding earlier. But yes, I consider the Lyra as a house sound. I find they have a delicate revealing sound with over analyzing. Top to bottom I find them to deliver what is ever in the groove. To a point that I have experimented with adjustments and find that extraction increases as if the cartridge can read it, if the tonearm settings and cartridge alignment are correct. That said, I am sure this is with any cartridge, the full potential of a good cartridge is dependent on set up. Like the best tire can’t fully perform with bad alignment and suspension. 
As far as the Lyra House Sound, you need to experience it to know if you will love it. Is there a Rega dealer in your area that sells Lyra. See if he is willing to set one up for you. Regardless of which cartridge he uses, you should get a feel for the sound Lyra brings to the table.

Lyra is very expensive cartridge, it depends how far you can go ... 

Dynavector KARAT 17D2 or next models with short Diamond Cantilever could be a good choice for less money.