NiceHash building rig advice

Out of interest Can someone recommend / list setup gear for a rig thats actually mine and is profitable ROI?

Im thinking 19 GPU ASUS B250 MINING EXPERT + other bits.

Can you advice me on what GPUS with it recommended, on higher end.

What CPU, RAM SSD, FAN,CASE Power supply.

Amazon links welcome.

There is no correct answer to that question. If you want fast ROI you will need to be a good bargain hunter and find the cheapest parts for the mining rig you are looking to build. But the power supply is not something you want to cheap out on. I would go for atleast a good gold one. As for reasonably priced GPUS good luck with that one they are hard to come by these days.