Exmo has been speculated to be affiliated with wex, but there is no solid proof to be found other than the obvious similarities. Looks like that market is definitely in need of some healthy competition to allow users to spread.
According to our resident troll, mayax, both BTC-e.nz and Exmo.com were registered by the same entity. If true, that would suggest to me that they are pretty closely affiliated. Frankly, they were sloppy if this is true. EUROSTYLE ADVISOR LTD is the registrant for BTC-e.nz, that much I can verify. But I can't verify the registrant history for Exmo.com without ordering a WHOIS history and paying for it because the registration was updated last month. Not about to pay for the report myself, not interested enough. Can't find any registry information archived, but for $10 or so, somebody can prove one way or the other:
EUROSTYLE ADVISOR LTD registered btc-e.nz which belongs BTC-e.com
EUROSTYLE ADVISOR LTD registered Exmo.com