The best value for money, though, is money. If the 4080 does what this guy needs, even if the 4090 is better, that's still hundreds of dollars saved. The bar to clear is "is it fast enough for what I need it to", after that it's a luxury spend.
Thank you. I see this all the time where theoretical performance/w or performance/$ purchases are made as if you own a data center. Performance unused is very expensive indeed.