Which sub $1k phono stage to go?

All,
Right now I am in the market of a sub $1k phonoe stage, and I need some advice. My setup is VPI MK IV, Rega RB300, and Benz Micro Glider. The rest of the system is YBA integre Delta DT and Atlantis Seolane, harmonic teck wires all through. I am using Musical Fidelity X-LP (the older can model), and I feel it is the bottle neck in the whole system. It lacks the resolution and details, and bass is not satisfying either. While I can't audit all the phono preamps out there in the market, so I am wondering if you can point me to the right direction on what phono stage I should audit, and also if there is anything I need to do to improve the rest of the system. Thanks a lot for your time.

Steve