I have a GR3 and several BSSs. They are different guns as far as "feel" goes. The GR3 with PG and sorta beavertail FE feels substantially lighter and quicker in my hands. The BSSs are all Sporters but feel a bit chunky in an A/B comparison. I have shot the GR3 a bunch with no issues, and the BSS feels bullet proof. I like them both. If the choice were between a GR4 and a BSS Sporter, same price and condition, I'd lean toward the GR4. Between the GR3 and the the BSS, it's a push. I've had mine for a while, but they were all around $1K when I bought them.
