Is the Ark Mechanicus worth it, or should I just get more NOVA cannons ?

[francjac6]

Well, it says it. In campaign.

[Sev]

It's a strange ship. Its a rather tanky battleship (800 shields that can be upgraded with 25 armour making it effectively 1000 shields) that is focused on Long range.

Mechanicus struggle as is probably need to more specialised ships.

[Imperator]

Better off with smaller ships.

[Gerver]

You cant fit 5 tyrants in 1000 pts anyway, any other cruiser is trash, so better go with Battleship + 3 tyrants against fleets that suffer from nova and hard to kite (eldars and chaos), against orks and tyranids you want your 18000 guns so 3 Battleships are fine.

[Aldehydra]

It's very useful as a "tank" during the campaign. It can take a beating and survive, allowing you to quickly repair and move on without having to return to a sector that can build more cruisers for you. Having an extra durable flagship also means you don't lose your good leaders as often.