Hey all, I'm looking to buy a new iMac to replace my current 2011 21.5 iMac. I’m sensitive to noise and want something with minimal heat issues / fan noise. I will mainly use this computer for web surfing, email, youtube, piano VSTs, and some gaming. A 21.5 inch screen is big enough for me. I’m leaning towards: 21.5 4K iMac, i5 8500, 512 SSD, Vega 20, 16GB RAM. I'd like to stick with a 65W processor and supposedly the Vega 20 is more power efficient (cooler?) than the other GPU option. The only thing preventing me from buying the above configuration is that the price tag is nearly identical to a 27 inch 5K, i5 9600K, radeon pro 580X, 512 SSD, 8GB RAM. Poor value perhaps and non-upgradable RAM. Any thoughts?