Zeiss does not make bad riflescopes, nor does it make any cheap ones.

Some are comparatively (~$400 as of February 2010 for some Conquest models) affordable and some are sufficiently expensive to contemplate selling a kidney.

Overall, if you can afford a top of the line Zeiss, it is about as good as a scope gets.

My personal favourites are Zeiss Victory 1.5-6x42 and 2.5-10x42.  For low light, check out 3-12x56 Varipoint.

ILya