OK its content time again so I thought I would share with you my thoughts on what I think is a little gem in Codex: Space Marines, the Landspeeder Typhoon. This is essentialy a Landspeeder with some Missile Launchers bolted on and comes with the option of a Heavy Bolter (for the price of a basic 5 man Tactical Squad) or a Multimelta (for the same price as a MM on a tactical squad). I have three of these guys in my list and they have yet to let me down.
I arm mine with Heavy Bolters so that they can sit near or on my back line and snipe transports and massed infantry. Using their maximum range keeps them safe from the all too common S4 Rapid Firing bolters that are the bane of AV10 vehicles, this means they tend to survive longer than the suicide MM/HF Speeders. Being Fast means that when their guns are shot off, which happens to me alot for some reason :), they can still be used to contest objectives.
There are a few things to be wary of though. Never squadron them, the silly hit allocation rules mean that its relativley easy to shut down the squadron with Stunned and Shaken results. Remember to use the full 36" effective range to stay out of harms way where possible. Lastly, remember that they are still very flimsy so cover saves and LOS blocking is your friend.
Typhoons are a very versatile unit, which is what is needed in a good SM unit. The good news is that there isn't much competition for FA slots in most Marine armies, the only real challengers are MM Attack bikes. Even so a squad of 2 Attack Bikes seem like a nice complement to 2 Typhoons.
To summarise, keep your distance and your Typhoons willbe a massive headache for your opponent.