From what I understand Shak'ars took a huge hit from this past AI patch; which means it's even more unreliable than it was prior to 1.27's release. I would go with vNG any day of the week.
unfortunately, vNG's main purpose (T50) will be removed soon
And T50 will be replaced by T500, which will be a more PvP based atmosphere; an atmosphere where rushes such as vNG reign supreme in today's metagame, granted a few tweaks would be necessary.
And this is all irrelevant. T50 will remain for at least 2 more months by which point I will assume that electrum will no longer be such a present issue and different decks can be tried, tested, and used at will.