I have had time to give my set a first look through....
Miniatures - Honestly, and I know that I will get shouted down for this, but the miniatures are not to my taste (and, no, I wont be selling them!). I dislike teleporting terrain with miniatures, and these figures are clearly designed to look good in the middle of a battle report photo. The three armed Genestealer bugs me (pun intended) and most of the other Stealers have gothic masonary attached. The Terminators are OK, but I cut my teeth with the old metal set Terminator box set, and so my Terminators are seriously lumbering suits. The detail is great, but the style just isnt to my taste. I have, however, bought two boxes of Genestealers and one box of Terminators, and need another box of each. So, maybe that is exactly the response that GW were looking for!

Board and counters - These are very nice, and I am very impressed with these. The door steps/holders are a nice touch and the counters seem solid. I am so tempted to pick up another set of board sections.
Rules and production - This is where I think GW have excelled. I was very sceptical before details emerged about this game. I was sure that the rules would have been 'updated' and the game would be simplified further and bear almost no resemblance to first edition. I thought that the trend from first to second edition would have been continued. It took some real insight and restraint to not only use the first edition rules as the basis, but also to leave them almost untouched. For example, I still cant get my head around the 'guard' action for Terminators, why it is really need and exactly what it is supposed to represent. Also, some sensible thinking has gone on. The tracker to log action points, ammo, etc is a very nice touch, and just shows that some thought has gone in.
Timer - This deserves a sub-section of its own! I am amused by the fact that almost no-where does it say how long the timer should last. Most places in the rules just state that this is the Marine players limit. It is made worse by the fact that some people have reported that the timer runs for one period one way, and a different period when inverted. I will be replacing mine, and I am looking for a time-bomb countdown which beeps for the last ten seconds and shows a digital readout.

Overall, I am very happy that I got my copy. Mainly because SH is one of the few games that I have a chance of getting 'non-gamers' to play a game of, and the production quality helps with this.