Vegeta SSJ4 , the "better" version largely depends on your preferred playstyle: whether you want a modern, flashy "Jump Ultimate Stars" (JUS) style character or a high-fidelity, competitive fighter Top Vegeta SSJ4 MUGEN Characters Super Vegeta SSJ4 Limit Breaker (by Micheal2200)

Shiruzato’s Vegeta: This is often considered one of the most versatile versions. It features a 7-button layout and allows Vegeta to start in various forms, including Super Saiyan 4, by holding specific buttons during character selection.

Key Features: Allows transformations from Base or SSJ through to SSJ4 and even Ultra Ego in some "monster" versions.

4. The AI (Artificial Intelligence)

This is the dealbreaker. The better version must have a configurable AI that reads opponent patterns at Level 8 without being a "input-reading cheater." The perfect AI will combo you using standard chains (Light > Medium > Heavy > Special) and will occasionally whiff, making it feel human.