You haven't specified a budget, and so you have several options at almost every price point. I love the DL-103R, especially mounted on my Thomas Schick arm. If you want to keep the "103" sound but just want more of it I suggest that you do as several of the guys above have recommended and upgrade your cartridge. Personally, I believe that the Soundsmith retip is the most bang for the buck, followed by either a UWE wood body or Midas aluminum body (depending on how you want to tune the sound). If you wanted to try something different in the Denon line, the DL-S1 is (supposedly) still available and sounds very different than the 103 line.
But other cartridges can and will take you to a different (not necessarily better) type of sound. Assuming that you want to stay in the world of "reasonably priced" MC cartridges, The Benz Ace or Glider are relative bargains, as is the Dynavector 20X2. Maybe a used Shelter 501 MkII?
The world is your oyster - just don't over cook it.
But other cartridges can and will take you to a different (not necessarily better) type of sound. Assuming that you want to stay in the world of "reasonably priced" MC cartridges, The Benz Ace or Glider are relative bargains, as is the Dynavector 20X2. Maybe a used Shelter 501 MkII?
The world is your oyster - just don't over cook it.