You can check ontime performance easily enough online. Seating tends to be very cramped on all Asian budget carriers. They are for folks who are price-conscious and willing to sacrifice a bit of comfort in exchange for sometimes very cheap fares.
Note that Peach, like Vanilla, is now controlled by ANA, and they will be merging.
https://www.reuters.com/article/us-ana-budget-carriers-announcement/ana-to-merge-peach-vanilla-units-to-create-japans-largest-budget-carrier-idUSKBN1GY0ON