I've personally used both on cars I've built, & I have to admit, the build-your-own economy version is a PITA. The deluxe door panels often sell themselves for simplicity reasons as well as they really aren't that bad of a deal.
For instance, lets say you needed all new appointments anyway. Map pockets, speaker grilles, inner door belts, & retaining push pins.
Economy door panels - 99.99
Assembly kit - 39.99
Speaker Grilles - 44.99
Inner door belts - 59.99
Map pockets - 94.99
Total - 339.95
Plus you'll spend the better part of a day putting it all together.
Deluxe door panels run 334.99 & can be on in an hour or less.
The inner door belt weatherstrip is an exact reproduction of the original & does have the chrome strip.