I have never owned a Galaxy product before so having one to use and depending on how it performs will influence my future computer purchases because I tend to stay with brands that have been good to me.
I like the ease of cleaning the fan (my Galaxy GTX 460) and the non-reference cooling solution is nice. My Galaxy GTX 460 has been running 24/7 for over a year in my HTPC without an issue.
Galaxy cards are generally faster, quieter, and in my experience have consumed less power than rival cards. AND!!! They don't voltage tweak because Nvidia told them to either.