My HP Omni all in one PC is reaching the end of its useful life after over ten years of great service. I like the all in one concept & would really like an ultra HD screen so my options for a replacement I have narrowed down to either an imac 5k or another windows machine if I can find a 4k version. My dilemma is that the Apple machine that whilst it looks great & has positive reviews would be a major change for me as a not very savvy 70 year old. I have an ipad & an iphone with no problems but I assume a computer is a whole new world. However the thought of moving to Windows ten frightens me just as much. I have it on a laptop which I rarely use because I hate it compared to the windows 7 I am happy with. Would welcome any thoughts, comments or advice. Sorry if this is in the wrong section, wasn't sure.