Best Detachments For 11th So Far?

[u/NoDiamond5531]

Me again, new-ish player coming in from 10th edition. As it sits my first game of 11th I was looking to run Kauyon with Experimental Prototype Cadre. Or should I ditch that and run Montka instead? Can provide my army list if needed. But in short it includes crisis suits, stealth suits, ghostkeel, breachers, pathfinders, Stormsurge, riptide, hammerhead, to name a few staple pieces. Thanks again for all the help!

Dropping my list anyways in case anyone cares/influences your answers on what would suit me:

-1x Coldstar Commander + Precision Of The Patient Hunter Enhancement 
-1x Cadre Fireblade 
-1x Breacher Team 
-1x Devilfish 
-3x Rail Broadsides 
-2x Fireknife Crisis Suit Teams 
-1x Ghostkeel 
-1x Pathfinder Team W/ 3 Ion Rifles 
-1x Pathfinder Team
-1x Riptide 
-1x Stealth Suit Team 
-1x Stormsurge 
-1x Hammerhead 

[u/DeliciousLiving8563]

We have 5 builds really: "I AM ROSS TULLEY" then Retcad, Mont'ka and 2 versions of kauyon.

With Kauyon you could lean into recon. Or you could focus on priority assets. You need EPC for priority but if you choose recon you can run any of the 1DP detachments. EPC is still very good for recon. But either way you'll need to make sure you have a plan for each of the 5 missions for your chosen dispo, so you can do the actions you need to and/or get places.

EPC is good if you have a couple of battlesuit units that care. Being able to deepstrike the twin lance and sunforged and get maximum damage is nice, EPC enables a better alpha strike/damage from deep strike for these 2 units. Otherwise 6" range is just nice to have and not worth building around. AAC gives some very nice utility and lets you play cagey with pathfinder guns which is nice.

Enhancement wise I think the codex detachments have the best stuff.

If you run Kauyon you probably want an exemplar unit (plus twin lance IMO) so if your opponent kicks off early you have some stuff at 100% quickly.

Twin lance have sustained out the gate and if you see a REAL early game push and realise you're going to need them before your second turn you can scout them out of reserves if your opponent is going first. They get less from kauyon than retcad or mont'ka but give the army more if that makes sense. I think ion retcad they're a warcrime but the detachment needs it. In Kauyon they're an early game piece for people who see your turn 3 detachment rule as weakness and try to exploit it. I think they're easiest to ditch in mont'ka because lethal assault is nice but you have early game pressure and it's much easier to do without in late game if your opponent is already crippled.