I don't know which is better as far as door window and frame but....
Don't be surprised if you find silicone sealing the window on the inside. Maybe that's why so many leak? Took long time to get out all old stuff. Wasn't sure what type of silicone to use as I don't like any of them. Finally went with what Winnebago uses on their exterior of RV's and has used it for years. Big difference in 3 buck a tube and stuff that was around $14.00 a tube.
2003 Majestic 23P... Northwest travel machine
2013 Arctic Fox 25W... Wife "doll house" for longer snowbird trips
2001 "The Mighty Dodge"... tow vehicle for "doll house"