It's highly unlikely Yobit has an NYC on either chain after the 51% attack.  The old chain is easily attacked and worthless, based on comments by the mod in Yobit's troll box, Yobit does not plan to move to the updated codebase despite months of effort by the community to get them to.  If you want to gamble that is up to you, but if it were me I would exit.  That has been the community recommendation for weeks when confirmation of Yobit's intent was not provided.

NewYorkCoin - Scrypt
0x7C1; // 1985

Most of us in the NYC community are aware of the previous contributions  from "Mr. Guardian Person".  On this front (edit:the Coinomi wallet and listing on Exchanges) he has done more than anyone else in the community.  The original adoption of NYC by Coinomi and the listing on Yobit are primarily due to the efforts of one individual.  I say thanks for that, but it's time for the community to stand on it's own and put it's money where it's mouth is.

Moonshot

That is true except when it is not  

Annual gold supply is just over 4,000 tonnes per year, with roughly 60% coming from miners and 40% from recycled gold (unlike industrial silver, gold is almost completely recovered and recycled back into above ground inventories).

I'm not a gold bug by any means, but $369.00 stuck under a mattress in 1996 would still be $369.00 - an ounce of gold would be worth a bit more.  So as long as NYC does not inflate as fast as USD it has a chance.

Year       Close
2015     $1,060.00
2014       $1,199.25
2013     $1,204.50
2012       $1,664.00
2011       $1,531.00
2010       $1,420.25
2009       $1,087.50
2008       $869.75
2007       $836.50
2006       $635.70
2005       $513.00
2004       $435.60
2003       $417.25
2002       $342.75
2001       $276.50
2000       $272.65
1999       $290.25
1998       $288.70
1997       $287.05
1996       $369.00

Except for the many times no block was found for 10 minutes or an hour because a big multi-pool hit hard and fast made a bunch of coin and left the small miners to burn hash at high difficulty till a block was found, only to see the same thing happen over and over again.  How do merchants rely on that level of inconsistency?

Facts vs delusional fantasies and snake oil

https://digiconomist.net/51_attack_sum_of_all_fears/
https://bitcointalk.org/index.php?topic=526721.0

Thank you for that hand-wavy completely non-technical and non-reassuring response  
You remind me very much of a character from Twilight of the Cockroaches (1987)
It's a great Anime, you should watch it.

I'm fine with the name, Charlie Lee might have a different opinion.

The issue that concerns me and should concern you is that users will be confused about which chain they are on and will experience the same issues that they recently experienced with the chain split.  This was only a chain split, when the hard-fork happens they won't be able to recover from attempts to send transactions across chains.  If you rename your chain to "Litecoin Free" much of this confusion could be avoided.

The NYC dev team has said nothing about implementing replay protection.  Have you looked into or thought about the implications?

Will you be changing the name of the old chain to "Litecoin Free", the name you floated for NewYorkCoin a while back?
Wait, I thought there wasn't going to be a fork?
Also where are the ATMs you promised us last year (or was it the year before)?

Dude!  You do know this is how all bitcoin based blockchains behave, right?
https://www.youtube.com/watch?v=GThxrzxEEVM

https://blogs.msdn.microsoft.com/seliot/2011/04/25/i-dont-always-test-my-code-but-when-i-do-i-do-it-in-production/

As a miner who also happens to be a software architect for a fortune 500 company that tests the hell out of our code using unit, integration and End-to-End tests I understand that the test environment can never replicate the real world in anything but the simplest of use cases.
Users with little-to-no understanding of software development are not very forgiving but from what I can tell due diligence was applied in this scenario.

Moonshot

Eloquently stated Slosh.  You have the full faith and support of the NewYorkCoinCommunity and as an NYC miner I fully support the direction you and the Dev Team are taking and look forward to a NewYorkCoin that is safer and more reliable for merchants and vastly more secure than the current code base with it's well known and exploitable vulnerabilities.

Moonshot