Ok, So I got a guy who plays stupidly competitive lists against fluffy list makers such as myself and a lot of other guys who don't do tournaments.
Now I have no real problem because when I play I aim to have fun and if i win then all the better, but this guy is the really angry kind of player. He started yelling at another player just because he wasn't screaming his warlord traits to him although he was telling the player directly opposing him on the table everything. Just as well, he picked up necrons only after I made his chaos troops my

(I creamed him with Grey knights and the next day he sold them to get necrons after everyone told him they were the most powerful codex this edition). Also every time I play he has this extreme hatred of my army and does nothing but belittles it. He goes on and on about how my army sucks and how anyone can cream me. In Free for all matches where the Eldar are the biggest threat, He deep strikes his entire terminator force at me and lets the Eldar skip happily away with the objectives while I leave him alone.
So, in order to put the hurt on this guy, I gotta know:
What kind of lists should i run against Necrons with lots of warriors and lots of flyers with those Tesla weapons?
What kind of Lists should I be running when fighting the Nidzilla lists from the Tyranids?
Also, what should I use against Eldar?
Am I list catering? Yes. Is it bad form? Someone told me yes. Do I care? Not anymore as this guy only plays to win, not have fun (or at least from what I have experienced with him in larger games.
He always runs Nidzilla with a mommaGaunt or two, a couple squads of Genestealers, The doom of malenchie (whatever it's called) in a spore pod, Mawlocks/tygrons, Carnifexs (usually a Tervigon is in there, Hivetyrants, and a swarmlord with tyrant guards and the bonsaber that make me re-roll successful invul saves. He also runs a few other things but I can't remember all their names.
As for the necrons, he runs lots of warriors to take out vehicles with dice hammers, Necron lords for that 4+ get back up orb, up to 2 monoliths, Immortals in a Doomscythe, and another Scythe flyer or whatever. As well as running the reserve guy where if mine come in he can bring ALL of his reserves in.
Now the Eldar:
Typically it's his wife with them but the list consists of:
Up to 2-4 Full dire avenger squads, usually a banshee squad, 2 WRAITHKNIGHTS with suncannons, scattershields, and scatterlasers for the twin link effect. Up to maybe 2 wave serpents, Avatar of Khaine, Fugen, Wraithlord, Wraithblades, and a full squad of Fire Dragons in a transport.
I mean dear god, he's 1 wraithknight away from an
Apoc formation.
So, what have you guys got for me? I run Grey knights and want to run black templar as my allies so I feel fluffy when I play AND I can mess with the new toys the Spezz mehrines got.
Right as of this moment my army (not list, this is just my armory) consists of:
Land Raider
Inquisitorial Chimera
Rhino/Razorback
X7 paladins (2 hammers, a halberd, 2 swords, phycannon, apothecary and a banner)
A grandmaster with a Halberd (Sometimes with OSR)
Techmarine with Halberd, stormbolter (I give him OSR for fun sometimes)
10 purifiers/strike squad grey knights
Castellan Crowe
Coteaz
Stormraven
3 Dreadnoughts/Venerables
Space marines/Black Templar
1 captain
1 commander/grandmaster with whatever weapon I can give him
only up to maybe 2 smaller squads of space marines (underpowered due to trades for armor and tanks...I like tanks)
only 1 terminator (needs reinforcements)
I have in the works:
2 land Raiders
a bunch of space marines
at least up to 2 small squads of purifiers/ strike squads
enough to fill up my Paladin squad
A custom Mordrak and Ghost knights
5 more Paladins with Halberds and maybe some hammers
An entire Black Templar army with the trimmings, Land Raider, predator, sword brethren, champion...you know everything.
Sorry if this was a lot of take in.