If you want the same kind of fast execution, GMGN is the closest multichain match, and Photon and Axiom are fast Solana terminals, with Axiom adding limit orders and perps. The right one depends on the chains and features you need, so check each for its current terms.
If the reason you are leaving BullX is that you want to vet a token first, from the browser and non-custodial, NAVI is the intelligence-first alternative: a rug check, a market risk score and a holder map before you swap. It covers Solana and Robinhood Chain and it does not trade for you.