For FUN or ETH I doubt we will see much movement in price,since ETH has gotten in PoS last September the price change has been not as big as it used to be before moving to PoS which had a lot of volatility,so I exclude betting on ETH and FUN and would only bet on Bitcoin price.
But isn't betting on coins that have more stable price movements such as ETH and FUN will make it easier for us to choose which price range we will place as a bet, indeed with more stable price movements the bet will be more in one or two price ranges only so the odds will end up being very small but it's better than betting on BTC, and FUN Token price predictions have always been my top choice these past few months always been profitable even though it's small but it's enough to keep the balance increasing and I will choose to bet on FUN Token again but that is not yet available as of today.
I think the amounts are smaller there though, which is why a small movement could take it from one place to another. Look at 2023 alone, we have been inside 4-5 different betting ranges during this past 2 months and that is proof that even though it's more stable in price, it still could move small amounts that could change the betting pool.
I like doing it with bitcoin because it is wilder and it definitely creates this amazing fun where if you bet high, and it goes high, then the market is also doing good at the same time so it means more than one win at the same time. Maybe that's just me though, I could be wrong and definitely not suggesting anything to anyone on how to gamble.