I have the HAF 932 for one of my own systems. Ventilation, airflow, and cooling are excellent. It can accomodate any cpu heatsink currently available.
Gamers and enthusiasts like to install those tall, tower style, cpu heatsinks to improve cpu cooling. Your rebranded TX3 is an older model
Here is a link to a recent Tom's Hardware article with useful information about 10 popular cpu heatsinks for Intel LGA 1156 cpu's:http://www.tomshardware.com/reviews/lga-1156-heatsink,2535.html
Personally, I recommend the Coolermaster Hyper 212+. Currently it is the best value for the money. In the USA it can usually be found on sale for $29.99. I have the original Hyper 212 in my HAF 932. Thermal results are outstanding. Recently I bought an adapter bracket for my new Intel Core i7 860. I am going to pull the 212 and install it in my i7 860 system just to see what it can do.