dedis which are good for XXX web sites

Do you know them?
They must be reliable with high uptime?
Are there any except exmasters.com?

The majority of dedicated servers should allow adult content since you will own the whole server.

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I can recommend you not to focus your attention on one company and check more dedicated server hosting providers as well.
If you ask me, I would choose glowhost.com dedicated server hosting services as they provide really high level of management, allow to host legal adult content web sites and will give them the best performance.

At the OP, why do you need the other dedis?
Exmasters is optimized for XXX hosting services, their support is great in providing their services in a quality way.

I would like to add that I have also heard good things about glowhost.com - their services are appreciated for the high server reliability, the connection speed and the excellent technical support available 24/24 hours via ticket, email or by phone.
It can be good place for running legal content adult web sites.

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Exmasters.com provides their services at competitive rates.
Services have many resources which are on-demanded by the web masters.
Support is responsive.

Look at Bodhost.com dedicated server hosting solutions.
They are optimized for application hosting and provide more security, reliability and speed than traditional web hosts.
They also allow to host legal adult content web sites and will give them the best performance.

Exmasters is the best in providing adult services, they are optimized for that.
It's hardy possible to find anything better.

Get an offshore hosting to avoid conflicts with content and download. I recommend you considering santrex.net. the company has much more attractive conditions than any adult host.

I see that exmasters is the leader in delivering quality XXX hosting for their customers.
All their services are quality and tech staff is skillful and helpful.
And they have 100% compatibility with video streaming and ffmpeg.