I don't know which year the side focus came out, but as far as quality I prefer the Burris. My next door neighbor has an older model BD 8x32 and I have a VX III LR side focus 6x24x40 w/ varmint reticle. At dusk his is much brighter, in fact my signature 6x24 is brighter than the VX III. This will be the last Leupold I own, Burris/Pentax just have better glass IMHO.