The VB80/280, rated 21 gpm @ 4,350 psi, will be my go-to unloader to replace the green spring unloader. The only difference is it has one bypass port instead of two, so some re-plumbing may be needed to install it. They will be $139.51.
The Zeromatic 83 is another unloader that I'll be looking at for multi-gun setups, rated 3 - 10 gpm @ 3,600 psi with bypass restrictors sized for machine output. It will be $100.30.