I asked the same question and went with the Vx3 but think #4 firedot is an awesome reticle. I compared a few of each side by side and thought the Vx3 glass a bit better. It was splitting hairs. Another hair that favored the Vx3 was weight as it was going on a light rifle. I honestly believe I over thought that aspect. That and I developed a hankering for a B and C as all of my others are #4. The Vx3 exceeded my expectations in brightness, color and ease of use. Eye relief is enormous. Like Ringworms' comment- these are all very good scopes so it really comes down to how much you want the lit reticle. If I did not already have #4's I would jump on a VxR.

When a country is well governed, poverty and a mean condition are something to be ashamed of. When a country is ill governed, riches and honors are something to be ashamed of
. Confucius