The term "exclusive" refers to something that is available only through a particular source or method. In this context, "best exclusives" likely means the best products or services that are only available from one specific company or brand.
Sentences with «best exclusives»
Some claimed it was due to the lack of good exclusive games for the console. (videogamesuncovered.com)
That many good exclusive titles is actually a LOT when you think about it. (nintendotoday.com)
We all know the console war is over in terms of sales but I'm happy that all 3 have some pretty good exclusives, good job! (n4g.com)