While Urbancraft 2.0 resource pack does come in a lighter 128x resolution package, the best version is the bigger one, because a higher resolution means crisper, cleaner, clearer textures.
Urbancraft 2.0 resource pack is a big, bold and beautiful resource pack with a resolution of 256x in a field where most packs don’t quite make it to 128x, and the majority seem to be between 32x and 64x. Anyone who can fool around in MS Paint or another pixel editor can create a resource pack for Minecraft, but that doesn’t mean their work will be any good.