For now, I've put BTTS yes, but I'm more inclined to bet on a draw.
For me BTTS feels like the solid bet and seems more likely to succeed than betting on draw. Both teams are eager to win because they
are fully aware of how important this upcoming clash is. I’ve always been on the fence about choosing between Inter and Juventus, but now I’m leaning towards following your suggestion with BTTS, possibly combined with over 2.5 goals. I still have a couple of days to finalize my bet, so I’ll think it through a bit more.