I can't just use ten, lol, I have too many favorites for that.
I'll just use twenty instead and despite numbering them (for overview purposes) I don't like anyone of those particulary over the others.
These are just my favorites in general.
1. Lost Memory (BBS)
2. Wayward Wind (BBS)
3. Oathkeeper & Oblivion (both KH)
4. Dive Wing (DDD)
5. One Winged Angel (KH FM)
6. Ultima (BBS and DDD version)
7. Void Gear (BBS)
8. End of Pain (DDD)
9. Twilight Blaze (Days) I just think this might be a good standard Keychain for Roxas' own Keyblade when he finally gets to become his own person. Better than still using the Kingdom Key as standard all the time (that's Sora's standard).
10. Brightcrest (BBS)
11. Rainfell (BBS)
12. Ends of the Earth (BBS)
13. Way to the Dawn (KH 2)
14. Star Seeker (KH 2)
15. Fenrir (KH 2)
16. Sweetstack (BBS)
17. Lea's Keyblade (DDD) I nicknamed it either the "Soaring Phoenix" or "Phoenix Flame". *ggg*
18. Two Become One (KH 2 FM)
19. Skull Noise (DDD)
20. Young Xehanort's Keyblade (DDD)