, the best is:
Nexus Mods (Search: "Oblivion Character Editor").
A one-click sandbox environment that strips your character of all consequences, allowing you to test builds, spawn custom combat scenarios, and instantly re-spec your attributes without navigating complex hex-edit menus.
The console is volatile. Using showracemenu often permanently breaks your attribute modifiers. A save editor applies changes cleanly without triggering the game's anti-cheat logic (which doesn't exist, but the engine just handles changes better through an external editor).
Oblivion is notorious for save bloating and corruption, especially when using many mods.
The OSE - Oblivion Save Editor is a specialized tool designed specifically for internal save data.