So I just got all the cores needed to move on, but I figured I'd do some leveling and fragment hunting first.
But a few quick questions;
1)Is it worth it for me to get the special weapon that increases attack and magic based on how many fragments I have? I think I only have around 40 right now.
2)Right now I'm using a Chocobo and Flanitor as my monsters, for the most part. What are some strong(er) monsters I should hunt for?
Yea Odin's Bolt and Odin's Blade with 160 fragment is pretty useless post game. The only thing it's useful for non boss characters, and Long Gui (since his defense is really weak).
For Boss characters (especially DLC boss) your best weapon are Gandiva (Serah), and Grasitha (Noel).
I was able to take out Gilgamesh in under 6 minutes with those two weapon on my best run. With the Odin's weapons you will be lucky to hit 15 minutes.
As far as monster are concerns Chichu probably best Commando when built correctly. One warning is that you can easily switch out Pack Mentality. I personally yellow locked it but that means giving up your one and only Nanchou. Anyways I only use 5 monsters in the post game and their builds are...
Chichu (Strength all the way)
HP + 30%
Role Resonance
Strength +35%
Chain Bonus II
Stagger Maintenance II
Attack ATB Charge II
Feral Speed II (You can replace this with quick stagger or rapid recovery, I was too lazy at this point to change it....)
Siphon Boost II
Pack Mentality
Resilience +40% (You can replace this with Quick Stagger or Rapid Recovery if you like)
Gilgamesh lvl 9 (my earlier post stated why I didn't go to 13, all power items).
Quick Stagger
Stagger Maintenance II
HP + 30%
Resilience +40%
Role Resonance
Strength +35%
Attack ATB Charge II
Siphon Boost II
Chain Bonus II
Rapid Recovery (Same thing as above if you rather have something like feral II go for it...)
As you can see both my commando's are pretty much the same.
Lighting (All mana items)
Pretty much the same set as my commando's except replace the strength +35% with magic + 35%.
Cloudburst (All mana items)
Same build as lighting. Sucks that he has auto enforst and critical faith on red lock though.
Cloudburst probably better overall because of his Feral Link ability. You can kill Raspatil in under 2 minutes (basically 1 stagger, and btw he's the best farming monster. 100k + 3 scarlite, and royal armlet in 2 minutes is pretty darn good if you have the durable collector catalog) if you use Cloudburst with Goblin Chieftain thanks to the feral link. Of course that mean my last monster that I use is...
Goblin Chieftain (All vitality items) *I picked him over the other sentinels because of his feral link.*
Resist Physical +36%
Resist Magic + 36%
HP + 30 %
Resilience + 40 %
And the pretty much the same items from the other 4 monster. Stagger Maint II, Chain II, RR, etc... Since you can't have all of them just picks the one you like most.