Consistency problems are often found in Serie A in recent years. But I prefer Milan, because Milan is my favorite team. I would like to see AC Milan become the ruling team in Italy and Europe. Regarding their inconsistency against lower-tier or mid-table teams, this is a serious problem for them that has yet to be resolved.
Let's see what Milan will be able to show in the Champions League this year, because last season Milan showed how much he is weak in the European arena. I would say that Milan managed to become champions in Serie A, to some extent due to luck, as they did not score much relative to other leaders, and at the same time they often had minimal wins. I say this because in Serie A, they can continue to dominate, but for the Champions League you need a much better game in attack.
If it's about the Champions League then no Serie A team can progress to a higher phase, because the Champions League is currently dominated by Premier League teams as well as La Liga. As for the other big teams like PSG and Bayern Munich, they are still not strong enough to fight the English Premier League teams who have better development in Europe in this era. I personally here is different from those of you who idolize certain teams, especially about Milan, I am more neutral and I recognize the better progress made by the teams out there. But if this discussion is only about the match between Milan v Inter for now, I also choose Milan but to bet it's safe maybe I prefer about both team to score or total goals.