+5 heavy fortification comfort delving determination full plate. Phew, that's a mouthful. +5 full plate because that's the basic function of a fighter's armor, heavy fortification because lucky crits on you seems like a bad idea, comfort so you don't have to get out of the armor when you don't want to, delving because you can't often get a burrow speed otherwise, and determination to save you when things go horribly wrong.
If you want to make it out of a special material (like mithral) you'll have to drop determination off that list.
Mithril or Adamantine?
DR 3/- is nice. But it would also be kind of awesome to wear Full Plate that counts as Medium Armor. If you take Endurance, you can sleep in it.
A Wand of Swift Girding seems like an important accessory.
The Comfort Armor Enchantment alleviates some of the need for Mithril.
Get an Armored Kilt. Mithril Armor counts as Medium Armor, so maybe you could add an Armored Kilt to your Mithril Full Plate, making it Heavy (again) and getting extra AC.
I have a level 16 fighter, strait fighter class...,I also have budget of 150k.
I’m looking to get some new armor.
What in your opinions would be a good fit. I have my own ideas
But I want to see if I overlooked something.
In addition to the other suggestions, if you have a powerful caster in the party, Spell Storing is a good option.
Which armor you'd want can be affected by your stats. If you have a really high dex you'd probably want to make sure you get your whole dex bonus.
Also you might of traded away some armor training for an archetype or advanced armor training options. So mithril may actually be something you want.
Adamantine is hard to go wrong with as a special material. DR is always good, and a lot of attacks that work against armor won't work against adamantine.
Personally I'd recommend +5 Medium Fortification Mind Buttressing Comfort Radiant Flight Adamantine Hell Knight Plate Armor (Glamored if you can afford the extra).
While the drop from 75% to 50% resistance to critical hits is huge, being immune to mind control and possession is kind of a big deal to high level fighters. You can definitely drop Radiant Flight if you have another way to fly.
Avr's armor is great, but I worry about dominate person. Also the base armor doesn't have to be Hell Knight Plate armor, but its got a 1 better skill penalty which sort of matters. 4 armor training, 1 comfort, 1 master crafted. Maybe that doesn't matter after all? It wouldn't matter to a basic fighter with no Advanced Armor Training.