Hello. I am going to be buying or building a new pc for audio production at home. It will mainly be used for a couple of tracks and some midi lines. Obviously I need a bit of firepower to run all the plugins. My question or questions are? How much difference is there between an i3 , i5 or i7. Will the jump give me a noticeably better peformance? If I go for an i5 for example, does this mean that at some point in the future when I have more cash I could update it to the i7? Which motherboard, would you suggest. I am guessing usb 3 and obviously pci for my interface. I do have a budget for this, but I want to get something that I can upgrade as I go rather than something that will just be obsolete in the next 18 months. Any advice is greatly welcomed. Thanks.