I thought FR/LG were just as good if not better than RSE (and that's coming from someone who didn't play Red/Blue until after he played Silver)... and HG/SS were certainly better than Diamond and Pearl...
Despite the fact it it never fixed the problems the originals had: Kanto Pokemon running around in Johto, low-leveled wild Pokemon, lack of side-quests, and poor leveling grinding/EV training.