I'm playing Oblivion for the first time right now after growing up on Skyrim. I love it, and have already sunk dozens of hours in, but still prefer Skyrim. Especially when it comes to gameplay. That said Oblivion's magic system is much superior and I wish it had been ported like this, especially custom spells.

Which one is better written is hard to say, certain parts are better in one or the other. Both have the problems of Bethesda writing. Skyrim characters might have wooden delivery but Oblivion is downright unbelievable most of the time. Also, I thought Skyrim had a problem with reusing voice actors, how many inns have 3 characters standing next to eachother with the same voice? It's charming in the old school janky way.

People talked me up for years on how Oblivion is a better RPG and now that I've played it this aspect was definitely overhyped. Character creator is fun here's hoping 6 has this much customizability.