advice "Deals" keyword is better or "Deal" Keyword?

[EmpireNames.com]

I am asking this because i own btcdeals and i have many offers on it mid $xxx but saw btcdeal as well in godaddy asking 1200 usd so my concern here is which one is better either deal or deals?
any advise would be appreciated.

 

[Addison]

"Deals" keyword is better or "Deal" Keyword?

At the end, yes.

Good: BTCDeals.com
Bad: BTCDeal.com