I have a Bresser 102/600, possibly the same scope as the Meade, and the CA is plain annoying.
Being me I would prefer the 90mm at f/6.67, but even that is I suggest is a little too fast for comfort.
Aperture is fine, it collects more light. And that is basically all it does. It is a nice easy simple measurement, and when you get to know other aspects its importance diminishes.
If you do not like looking through the scope you are not going to use it much, immaterial of aperture.
Aperture does more than collect light, it also provides greater resolution and fine scale contrast.
I have owned a number of 4 inch achromats and ED/ apos including two 102 mm F/5s, three 100mm F/6s, a 102 mm F/6.5, and 102 mm F/7 ED doublet and a 4 inch F/5.4 dual ED app quadrupled. New, these cost from $200 to $4000. They all provide meaningful enjoyable views.
At low to medium magnifications, the views are very similar. At high magnifications, the ED/apo scopes are definitely cleaner and sharper, not doubt about it. But even then, the basic planetary and lunar features are visible in the 100mm F/6 achromats.
There's a reason I've owned so many 4 inch achromats... they're good scopes, I buy them used, enjoy them myself for a while and give them to aspiring amateur astronomers in need of a good scope.
Optical perfection is not necessary to enjoy the wonders of the universe.