I've eyed both those guns (if we are talking scar 17s) and came very close to buying the Barrett once. I decided I just wasn't going to shoot 50 Cal enough to warrant buy it. I also don't see any reason to buy 4 Scars. So I would probably buy one SCAR 17 S ( and perhaps a 16 so there was consistence between platforms). Unless you are into long range shooting, have a place to do it, and know you will shoot a lot I wouldn't buy the Barrett. I decided that I'd rather buy a Mac 10 and slow fire upper, and 22 upper plus mags and accessories than the Barrett.