I currently have a Corsair GS600 that I got with my 680/i7 system in 2012. I know in terms of pure wattage it's enough, but it has a crappy coil whine, it's non-modular and there cables everywhere that collect dust, it's loud etc. I am looking to upgrade to something a lot higher quality, and my budget is between $150 - $210. I don't want to cheap out at all because I know how important it is. I was looking at the Corsair RM and HXi series and some high-end gold rated seasonic psu's. I'm looking for a 750w PSU, because I definitely wouldn't need much more. Thanks for any help!