Yeah, I'm thinking about getting new fans for Christmas that are quiet on idle and when gaming (it's only this loud when gaming, fortunately). Any recommendations?
Depends on the size of the fans your case supports. Usually 120mm, but some of them have weird configurations that take 80mm or 92mm fans. Also note that the loudest fans in your case will
always be the CPU fan and the GPU fan, and sometimes the PSU fan as well if it's a piece of crap PSU (and none of those are really as easy to "swap out" as the case fans are). I don't know how tech savvy you feel when it comes to the hardware aspect, but getting a cheap aftermarket CPU cooler is one of the easiest ways to reduce the noise inside your case, though it's otherwise not needed for temperature reasons unless you overclock.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103052
The best of the best for silence seems to be http://www.newegg.com/Product/Product.aspx?Item=N82E16835608004, but they come at an obvious premium.
As for CPU coolers I wouldn't recommend putting one on if you don't know what you're doing, so that's just a "be that as it may" idea. Still, you can't really go wrong with http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065, provided you watch plenty of guides on removing the old one, cleaning the old thermal compound, and applying new thermal compound.
As for the GPU fan there's nothing you can do about that besides getting a newer, better GPU. Same with the PSU fan.