What cartridge?? Lyra, Dyno etc...

I need/want a new cartridge to go into my SME Model 20A record player. I currently have a four year old next month Lyra Helikon. Not a bad cart but fancy a change. What are the views of fellow audiophiles??
Which carts work well with my record player, I've heard that Lyra and Dyno's work well, any others???

System:
Front end: SME Model 20A/Lyra Helikon/Ayre phono cable XLR/Symposium Ultra Platform
Sony SCD-555es with VSE level 5 mods Balanced
Preamp: Ayre Acoustics K1-xe with phono boards
Speakers: ATC active 20 towers
Cables by Clearer audio
Rack Finite elemente pagode° Signature

Mooner.