Hi Energy vs Pro Magnum HFT lifters

The Pro magnum are totted as allowing more rpm's/less susceptible to pump up. Does anyone have any experience switch from the Hi-Energys to Pro mag lifters?
I'm currently running the Hi-Energys and it's getting into valve float/pump up around 6150~6200. I plan on checking springs first but I'm wondering if a switch in lifters would be beneficial?

any thoughts or opinions?

Thanks,
Gary.