The best adult hosting provider ...

[transilvania]

Is that host4porn.com (https://www.host4porn.com/adult-shared-hosting/)?
I mean the best adult hosting provider ....

[Vec&sec]

I think that using specialized providers should be a very good idea.
However in terms of money it can't be that good. For such kind of the content I would better use something related to dedicated server. For good dedicated server I can always recommend you https://gthost.com/