Hi! I'm a newbie, on a very, very limited budget and need to replace my antique computer.I don't need anything fancy just a super reliable machine. I only use my computer for the basics -- email, web surfing, You-tube Netflicks, and watching videos,etc. I do not do any gaming so that's not an issue. I want to use my 1080p big screen as a monitor about 80% of the time and a standard monitor for the rest. I'm a music lover and want to store and store and play a lot of high quality digital media. I have an excellent stand alone DAC so I just need the computer to send it a clean digital signal. again,I am on an extremely tight budget and need advice on getting a unit that will meet my needs. Used? Refurbed? New? outboard memory? I have no idea on where to begin, what I need, and what to avoid. I would be very grateful for any help and advice you can give THANKS!