Hmm... If someone can fuse Ifrit, Beowulf and Gilgamesh, This would be in the top of my list.
But, I think it'll not gonna happen.
So many arms, so many to compare, but I'll list my top 10:
1. Lucifer, let's dance!
2. Rebellion, let's dance, too!
3. Nevan, let's rock!
4. Pandora, let the Omen and Hatred begin.
5. Agni and Rudra, they just won't shut up when I get crazy.
6. Cerberus, too easy to handle, seriously.
7. Yamato, when Vergil wields it.
8. Yamato, when Dante wields it. C'mon, it's Vergil's.
9. Gilgamesh, shocking!
10. Beowulf, I really love Rising-Dragon-You're grounded-rip-off from SF's Ryu. :lol: