1. Link the product you are asking about (we're lazy)
2. Give us more details. "Is it good?" doesn't really tell us much. What are you wanting to accomplish? Lowest temps? Silent? Gaming HTPC? "Good" is subjective even if you give some details, it's meaningless without the details.
I had an H50 installed in mine for awhile. It fits and works great. I swapped it out for a fanless Thor's Hammer for a quieter system. Not sure if a H70 would fit.