Upgrade from Rega Elys 2


I'm fairly new to the game - system includes a Rega P3, MoFi phono stage, Rega Brio, and Dynaudio Excite X18s. Essentially a desktop system. Looking for a possible upgrade from the Elys 2 cartridge that came as a package deal on the P3. Trying to stay around the $500 mark and wanting suggestions. Thanks. 
audiosavage1
The 2M Bronze is one I've looked at. I'm sure that there'll be upgrades to the system along the way. The hard part is staying in budget. I appreciate the advice. 
How do you like your music? Clear and airy with lots of detail or a little warmer?
Ortofon Bronze or Black for the former and Nagaoka MP500 for the latter.

My tastes lean more toward the warmer, but it depends on the instrument that's the most prominent and that I'd like to hear the most clearly. The black is within the upper stretches of the budget at this point. I'll look at the Nagaoka as well. 
Obvious choice , unless you get off playing all day with shim's", is Rega Exact, a fine honest cartridge .