[url=http://www.forgeworld.co.uk/en-GB/The-Horus-Heresy-Mechanicum-Taghmata-Army-List]Taghmata Army Book - £32.00[/url]
Saves you having to flick between the various very heavy, very expensive HH books, which is nice. It also has new units. Like the Ordinatus. Yes. Yes I have just placed an order!
[url=http://www.forgeworld.co.uk/en-GB/Mechanicum-Magos-Macrotek-Enginseer-Servo-automata]Magos Macrotek Enginseer with his Servo-Automata buddies -£45[/url]
Not entirely sold on the Magos myself, but those Automata are lovely.
[url=http://www.forgeworld.co.uk/en-GB/Knight-Scion-Seated]Seated Knight Scion Pilot - £15[/url]
Fits in the Forgeworld pattern Knights. Would also be an interesting display project.
Sadly I'm having technical troubles copying the image URLs via iPad, so no pics. Sowwy!