I have both, and side by side my VXR actually seems brighter. The entire VXR line is illuminated with what i find to be the best red-dot i have seen. I find them a tad heavy (30mm tube) for the magnification, but very well made. According to the gang at my dealer (who have a TON of experience with Leupold) , the glass is the same as the VX3 line, except for the coating which apparently is better in the VX3-- allowing for clearer images at low- light. The VXR has few models and really a low- to mid magnification line.
If you are not looking for the red-dot, go with the VX3. Furthermore, if you are not stuck on leupold, dont be afraid to try the German brands.
I also see that you are in NB. You may want to take a drive to The Gun Dealer, where they can let you hold them all and look through them to compare. Thats what i did.