I think I'm too super excited about the Horus model being released by Forge World! Seriously, I think that the sculpt is absolutely gorgeous!
But the price tag -- GBP60 -- is really rather up there - but equally so is much of Forge World's kit.
In the interview that Simon Egan gives about the sculpting process there is also a really interesting. In it, he gives almost a throw away line about the thing he's learnt - including embossed plate armour for a future project. So: who else in the 30k series has amazingly embossed plate armour… hmmmmm…!