The thing I like about Corsair is how they provided the first performance-style component I ever purchased, two 256 MB sticks of PC2100 RAM. That was the first machine I built for performance over economy, and it still holds a special place in my heart.
I like the designs of Corsair's cases, the quality and durability of their PSUs, and the overall satisfaction I've had using their products over the years!
I like Corsair's memory products. They're my preferred brand of Memory. Their power supplies seem pretty good. My TX750 power supply has been working great. I need to try some of their other products.