Greetings Gentlereaders!

First we need to look into out weapons selection. I can't label the weapons as I did with the battlesuit weapons as most of these are available to most vehicles and have varying points costs from vehicle to vehicle. I should have covered vehicle wargear in its own post, but you can find my comments on the FAQ 1.0 vehicle wargear here. Let me explain what I mean when I say that a vehicle has "primary" and "secondary" weapons. Primary weapons are either turret or nose mounted, secondary weapons are always at the front of the vehicles on nacelles in circular housings.

Smart Missile System (SMS) - Just like the broadside version, but works much better on the tanks. Available as a secondary weapon to all vehicles except piranhas.
Gun Drones - Two gun drones that can detach if needed and become a two drone squadron exactly as if they were purchased from the fast attack section. Not a horrible option, but it is the same price for the hammerhead and skyray as the SMS.
Seeker Missile - This is a hunter-killer missile that requires a markerlight hit to fire. The skyray has an array of six as its primary weapon. All vehicles can purchase up to two for a fixed price.
(Hammerhead) Railgun - Same stats as the broadside weapon, but trades the twin-linking for the ability to fire a strength six armor penetration four large blast at the same range. It's the price of a Templar rhino, but it's generally the only blast Tau armies brought in fifth and it's a railgun.
Ion Cannon - This is a three shot, sixty inch range, armor penetration three autocannon. Only available on the hammerhead, this is rarely seen, though it is forty points cheaper than the railgun.
The Tau Empire's motorpool has a modular design similar to the Imperium's with all vehicles except the piranha being a bits swap from a single chassis. The devilfish is a dedicated transport for fire warriors and pathfinders, piranha are fast attack, while the hammerhead and skyray are in competition in the heavy support. None of these vehicles come at a low base cost, though most have few upgrade costs. Next time I'll look into the piranha and see if one of the most lightly armored vehicles in 40k can endure or even shine in the change from fifth to sixth.
I'm Underground Heretic and I get to live with that everyday.
Ion Cannon - This is a three shot, sixty inch range, armor penetration three autocannon. Only available on the hammerhead, this is rarely seen, though it is forty points cheaper than the railgun.
The Tau Empire's motorpool has a modular design similar to the Imperium's with all vehicles except the piranha being a bits swap from a single chassis. The devilfish is a dedicated transport for fire warriors and pathfinders, piranha are fast attack, while the hammerhead and skyray are in competition in the heavy support. None of these vehicles come at a low base cost, though most have few upgrade costs. Next time I'll look into the piranha and see if one of the most lightly armored vehicles in 40k can endure or even shine in the change from fifth to sixth.
I'm Underground Heretic and I get to live with that everyday.