its also funny to read when you are used to one or the other.. i find the hardcovers difficult to manipulate and only suited to classic reading style.. (another reason i don't like e-readers.. just try and dog ear a page.. )I had The Hydrogen Sonata in HC, but the rest in paperback. Amazon.co.uk delivered my paperback version and now my shelf looks - right. I sleep much easier now.
its a lot easier to read a paperback one handed, folding the pages to wrap around to the back of the book as you go..