Eagles vs. Buffalos for my Gold IRA - a Greenwich perspective needed

• •Alright, so I’m sitting here, staring at my portfolio, and doing my annual rebalance.
• •Mostly paper, obviously, but I’ve got a decent chunk, about 8% of my 3.5mm liquid, safely tucked away in physical gold in my Gold IRA.
• •Keeps the tax man slightly less interested and provides that ever-so-comforting ballast when everything else is doing its usual dance.

Alright, so I’m sitting here, staring at my portfolio, and doing my annual rebalance. Mostly paper, obviously, but I’ve got a decent chunk, about 8% of my 3.5mm liquid, safely tucked away in physical gold in my Gold IRA. Keeps the tax man slightly less interested and provides that ever-so-comforting ballast when everything else is doing its usual dance. For years, I’ve been almost exclusively stacking American Gold Eagles – the fractional ones, 1/4th and 1/2 oz, mostly. I like the idea of the government backing, the history, etc. But lately, I’ve been thinking about diversifying the type of coin, not just the quantity.

My buddy down the street, who runs a smaller fund but is also pretty keyed into the PM space, has been pushing me hard on American Gold Buffalos. He says the purity is a big deal – .9999 fine gold versus the Eagles’ .9167. I get it, sure, higher purity sounds better. But Eagles have that copper/silver alloy that, theoretically, makes them more durable. I'm not planning on carrying these around in my pocket, they're sitting securely in a Delaware depository. So, durability isn't exactly front of mind for me. Is the premium on Buffalos justified for a Gold IRA setup, especially when liquidity might eventually matter for RMDs down the line?

Honestly, when I eventually hit 73, I'm going to need to start thinking about those Required Minimum Distributions. I've been playing around with that RMD Calculator from Gold IRA Blueprint, trying to model out different scenarios, and having coinage that's easily valued and converted is going to be key. Are Buffalos generally seen as having better resale value or easier to liquidate than Eagles when it comes to an IRA distribution? I always just assumed Eagles were the gold standard (pun intended), but open to being corrected. Anyone here have a strong preference one way or the other for their own Gold IRA, especially with an eye towards that future RMD headache?