Agreed, but 1440p/144hz monitors and a setup that can properly drive them will probably come out to a bit more than $1500.
Also having dealt with 1440p and 144hz individually after using a 1440p/144hz monitor for a while, I definitely notice going from 1440p->1080p a great deal more than going from 144hz->60hz.
It may differ person to person but I strongly prefer 1440p over 144hz if I had to make a choice.
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Here's a general guide of (IMO) what to look out for, also helps if you have a Micro Center or Fry's Electronics nearby.
Processor - Ryzen 5 / Ryzen 7 / i7-7700k (8700k ideal, but is expensive and doesn't have any cheap motherboards currently, probably not within budget, would rather go 1440p and go with one of the mentioned processors)
Motherboard - Any decently reviewed overclockable ATX motherboard, X370/B350 for Ryzen, Z270 for the i7-7700k
RAM - 16GB of DDR4 - high speed RAM preferred if going Ryzen, not as big a deal on the i7-7700k
GPU - Any non blower model GTX 1080 - go blower only if you can get a sick deal on it.
SSD - Any reliable 250GB+ SSD, M.2 or 2.5 inch.
HDD - Whatever you feel comfortable with, standard 1TB drive probably fine (WD Blue or Toshiba P300)
PSU - Something 550w+, preferrebly modular/semi modular, and bronze 80+ certified minimum, along with being a reliable unit.
Case - Whatever you feel like getting that's on sale.
Monitor - Any decently reviewed 1440p 24+ inch monitor.
edit: something like
this would probably serve you well. You will get slightly better performance going for 7700k over ryzen 7 1700 at 1440p, but likely not by much, and the ryzen is probably more future proof. You could probably shave another $100 or more off by waiting for sales.
If you're dead set sticking at 1080p, get yourself a 7700k/8700k and a 1070, and a high refresh rate 1080p monitor.