Dynavector 10x5 what is next?

Dynavector Karat 17D3 would be a good pick. I have used it with a Rega 25, Harbeth Compact 7, Quad amp/preamp and thought it sounded great. You have to be sure your phono preamp has about 60db of gain.

What kind of price range are you looking at?

17D3 or a 20XL would both be good ideas if you like the Dyna sound. They also have different strengths and weaknesses, so I'd go with what best matches your preference. I use a Soundsmith rebuilt XX-2 Mk II and love it. Great sound in my set-up, and less fussy to set up than some LOMC carts. Tracks great too.

I've had the 10x5, 20xl and 20xH the17D and the xx2mk II. The 20x is a marginal step up the 17d is huge as is the xx2. The 17d is so clean and clear sounding you will be amazed. In a way I like it better than the xx2 but I think the overall balance is better with the xx2 you can't go wrong with either. I think you will certainly like the 20x better than the 10x5 but if you are looking for a big jump go at least to the 17d.

Thanks
Do you guys think the ps audio will be ok.
I like separation on instruments and deep soundstage,
Listen to all kind of music.
Very happy with harbeth/luxman.

Input Sensitivity/Impedance: phono (MM), 2.5mV/47kΩ; phono (MC), 0.3mV/100Ω

You should be able to run the Dynavector 17D3 into the phono stage on your Luxman wih no problem. See the specificatin above from Luxman.

Without trying to be snippy, you could have looked this up in the Luxman manual. I can't tell you about the PS Audio because you have not provided the model information. If you have a question people are happy to help and it is great when you provide the pertinent information.