I have a Vortex Vyper HSLR 4x16.. It is a very nice scope and I have been very pleased with it.. Shameless plug here, but I am moving all my stuff over to Athlon.. Same warranty as Vortex, and IMHO the glass and construction quality is on par with Vortex, but you end up saving about $100-$200 or more on each scope. Thats alot of money..