NEEDED some insight on new component sets to buy

looking for some new speakers to put in the car. looking at buying 2 sets of 6.5 components

right now i have a set of mb quart rua 216 brand new in the box never hooked them up yet i was wondering if i should just get another set of mb quarts or just sell these and get 2 sets of some cdt comps??

what do you guys think?

going in my 84 caprice im making fiberglass pods for the c pillars to house one set and then the other set will most likely be in some fiberglass pods on the front doors