Hello , I am an expert if it comes to buying cpu's and gpu's but my knowlege about fans is very low. I am willing to buy 2 more case fans for my build. I have a low budget for these in order to buy a new 6 core i5 in september. I want to spend not more than 10-15 usd. Anybody knows which fancy fan can go as exhaust with the best performance and also as a second fan It doesnt needs to be rgb. Only the exhaust fan needs to be rgb lightened. This is my case: https://www.morele.net/obudowa-silentiumpc-regnum-rg1w-spc153-774109/