I was using elementxs (S and E) I really liked the Evoproline ones, they were very straight and predictable, with a stability between a KC roc, and a DX roc. I also had E Element X's that were very similar to a Z wasp in stability. And I also had a S Element X that was more overstable than a new roc, and another that was about as stable as a buzzz.
I switched to wasps becasue I can buy a stack of wasps from the store and they all fly the same. Throwing the ELement X was almsot like throwing different molds between different runs.
I loved the Domey S elemnt X's, the Evo proline Element X's, and reg E all for different reasons, and if I could be gaurenteed those I wouldnt have switched, like if a store here sold gatweway and I could hand select my discs. Now if that were an option I probably wouldnt switch back because I am used to he wasps now (its an easy transition)
Z Pred-ESP Cyclone-Z Force-Z Aftershock-Z Comet-Ion-Pro Rhyno