Today enquired from NP:
i7 930= 16000, x58 pro E= 11k,GB x-58-UD5-18k
i7 860=14900, H55-UD2=6500
These prices are incl taxes, remaining money can be spend on RAM and GFX IMO.
My personal opinion is if you are planning to go for a SLI/XFIRE setup then it make sense to spend on 920/930 otherwise stick to 860. (Remember this is my personal opinion)
Hope it clarifies some doubts.