Which would you choose?
So basically $600k spread out over 10 years or $500k lump sum?
Generally speaking, you'd take the lump sum.
If you invest all $500k at a conservative 4% annual interest, at the end of the 10-year term, you'd have $740k....so...more money than the monthly installment option which would add up to $600k
Of course most people aren't going to throw ALL that money at investing/high yield savings. Let's say you spend $100k on paying bills, buying shyt etc. If you invest the remaining $400k.....at the 4% interest rate, you'd have $592k after 10 years...so you'd recover the lump sum and then some.
The ONLY way the monthly plan makes sense is if you're terrible with money OR you already have a ton of money and just want some monthly liquidity for XYZ reason.