I would definitely buy it as it is good film (in my opinion anyway). And even if I did not like the film I would still buy it, as of now Steelbook collection is like an addiction (just like drugs but better & legal(not so good for my bank account though)).
It's a maybe for me. Potential for this to be one of the best steelbooks ever but the film itself isn't as good as it might have been. We have it on DVD and haven't once been tempted to upgrade to BD.