Never owned a Hilieberg but like the designs and always have a bit of tent envy when I see one. However, as already mentioned on this thread, I do think that you are also paying a premium for the name.
I have the Alpkit Ordos 2 which weighs in at 1.25kg, great tent, but like the common issue that appears from what I can see with Hilieberg suffers with condensation. However, the customer service from Alpkit is among the best I have ever seen.
It's worth looking around as there are lots of smaller cottage companies that offer some great products now.
Good luck in your search, half the fun for me is researching equipment as well as using it.