Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

What are the differences between them all?

i'm not overly up on Tau, I'm just getting into them now and I love how the FW models look.

The FW Battlesuits are special patterns that include various wargear such as a TL Missile Pod or Target Lock by default. I can't remember where the rules for them are, I think they're in the Taros Campaign handbook, but there's nothing stopping you from just using them as regular XV8s.

http://www.forgeworld.co.uk/Downloads/Product/PDF/t/Tauupdate.pdf

(The FW Broadsides are just an alternate model for the codex unit.)

The hazard battlesuits are completely different though, with different weapons and taking up a FA slot. Their rules are in IA: Apocalypse II.