You'll find as many opinions on 'scopes as you have TFL-ers in these forums. My views on the major 'scope makers are:
The big-name European scopes - Zeiss, Swarovski, Schmidt&Bender, Kahles - are all fine optics, and those who have purchased them - sometimes for prices well in excess of $1000 - vociferously defend their choice to spend that much money. IMHO they're not good enough to justify the prices charged. The times I've made side-by-side comparisons of some European scopes with, say, Leupolds, the latter come off very well. In particular, I've noticed some of the Europeans show more reflections off internal components, which can cause glare.
From what I've seen, Leupold scopes - my personal favorites - adorn more top end custom and benchrest competition rifles today than all others combined. Leupold also puts together riflescopes for Steiner and Leitz (Leica). Leupolds usually have more eye relief than the European 'scopes, too. I like 'em.
Burris has a good reputation - particularly their "Black Diamond" series - and I've read they make 'scopes for Pentax.
Nikon, Redfield, Weaver, the better Bushnells - I view these as "commodity" scopes, serviceable, OK for most general purpose use, but not really something to rave about. (Though I've heard the newer Weavers are nice.)
I hold Tasco 'scopes in far lower regard than does Darkangel.
And stay away from the $49.95 "Leapers" or other semi-generic crapola 'scopes from Red China.
Now, money is no object and if you equate $$$ with quality, take a look at 'scopes by US Optics or Nightforce.