There are no surprises in how they look.
link
Probably my least favourite looking titan but seemingly the most versatile in terms of the game. I will probably get 2-3 of them. One of the Legions I'm doing is Gryphonnus and I just read today that they had a LOT of Reavers and used them for all kinds of stuff. So you can modify them with extra armour, extra movement and so on.
Maybe I'll ultimately end up with 4 of them but 3 should be enough to start.
I'm actually considering getting and extra titan of each class for each two of them class that I have and using the extra one to make two wreckage markers for if the things fall down. It seems odd to have such large thing removed from the battlefield entirely.
And with so few figures per side it would be a pretty neat effect.
It looks like to run any of them you will need to spend about $100 USD with 1 model and the command terminals and weapons cards but that should let you run up to 5 of them at a time, which is about as many as you would ever need in most normal games.
Looks like the FLGS is getting some serious dosh next weekend.