I have a leadtek vid capture card and a chaintek KT600 MB. Neither has given me any trouble. The vid card capture quality is dissappointing though. I also have an ECS MB that doesn't read voltage or Mb temp correctly but overclocks great.
Bottom line. Any part you buy is a crap shot. You get a good one, it works good. You get a lemon, you are screwed. The difference is in how well you are supported with the warantee and what features you get for the price.
Since you loose use of your PC for 2-12 weeks for a warantee replacement my policy for the last year has been to buy the cheapest øøøø I can find locally, return it if it has any problems out of the box, if it breaks after the return date throw it away and get a new one.
I have been a much more satisfied customer now than when I was buying "top of the line stuff" previously.
BTW You do realize that part numbers ending in se and le stand for substandard edition and losers edition right? They are neutered and lobotomized from the factory.