Dynavector 20 Xl , Benz Micro Ace SL or Denon

I am considering purchasing my first MC cartridge and am considering the Dynavector 20 Xl, Benz Micro Ace SL or possibly one of the Denon models. I am currently using a Rega Exact 2 MM cartridge on a Rega P3 with an upgraded RB 300 tonearm. I have an Arcam C31 with P1 monoblocks. I sometimes feel that the soundstage could be wider and more detailed. Would the move to either be justified? Thank you for your input.