Deere D series and LA series 42" deck Mulching solutions

[kidsmoke]

seems there are a couple of variations on this theme. What are you folks using on the decks that is working well?

https://www.amazon.com/John-Deere-O...rd_wg=hI7jF&psc=1&refRID=FXCPT2AD19ZF29V0M5Q1

https://www.amazon.com/John-Deere-E...rd_wg=3WPoC&psc=1&refRID=R90R1R7BYS0E640VDYGG