That March Tactical 5-50 is really interesting. A point of concern to me is the 5 year warranty versus lifetime no questions asked such as Vortex. There motto is you should never need it; but what if I do after 5 years? For that price tag, I would expect a really good warranty, at least against any defects. Maybe not if I drop it off a cliff, but for any reason other than abuse/theft. Just my thoughts (which really shouldnt be worth much), but I'm new and I've also never looked through one.