I got my D800 soon after they came out. I don't know what issues you're referring to, I haven't had a single one with mine. I simply think its the best camera there is for landscape work. I pair it up with the 16-35mm and 24-120mm - I couldn't imagine using anything else.
I pull out the D4 with the 24-70 and 70-200 or even the 28-300 for other work, but for landscapes the D800 with those two lens are king.