stumbled on these vortex diamondbacks for $155 shipped. if it was an AO model i would have grabbed one myself.
i do have a diamondback 2-7x35 i got from adomara camera for $144 on sale and it is one of my favorites.
since the $179 vipers are long gone and the crossfire 2s mostly cost more than $155 i consider this a good deal.
vortex has the best warranty and service in the biz, for an all around scope a $155 diamondback is tough to beat for the price.