Lots of good coolers out there. If yours works for your application and price point, more power to ya. Mine works for me.
The Xig is pretty easy to install. I got the bracket at NewEgg, and the thing went on no problem. It's cheap, and people have done empirical tests showing that it does a pretty good job. That's why I'm using it. I don't need the best, I need "pretty good" and "not too expensive". The Xig fit that bill.
The rubbery prongs that attach the fan to the heatsink were kind of a pain to figure out, but after thinking about it, they went on without too much struggle. Have to make sure you install Xig and its fan _before_ putting the motherboard back in the case.
Frankly I found the Zalmans to be over hyped back when they were still relevant performance wise. They looked neat, but never topped the chart on any list I saw. Certainly didn't win any price/performance ratio battles. The Xigametek on the other hand has been tied for the lead since it came out. Only big dif. between it and the Sunbeam is that the Sunbeam is shorter, which was why I picked it cause I have a fan directly over my cpu on my side window (still barely fits).