I ordered a pc-65b from xoxide, but ended up with a pc-60 or pc-60b. Basically same model just instead of 2 fans in the front, it is 1 120mm fan. Now I was wondering how good the quality of the stock 120mm fan from lian li is. I had bought 4 tornados for the pc-65b I was going to get, but now only have use for 2 of them. Is it worth getting a replacement fan for the stock one? Will it be sufficient? If I should replace it, any good suggestions? Thanks a lot.