In terms of quality Maxxxine is probably the worst of the trilogy. I still had a great fun time watching it, especially the first hour. Personally I think it's more enjoyable to watch than X for me, but not as iconic as Pearl. Rewatchability is a huge factor for me and I think Maxxxine is very rewatchable. Especially with all the homages to X and Pearl.
Spoilers: The final act with Maxines father was a logical conclusion that I feel didn't hit as hard as it could have. The scene where Maxine is being chased and ends up in the Psycho house also could have ended with a little more consequence. Apart from that I thought it was a good addition to the X trilogy.