The best VPS provider
 

Is that luxhosting.lu or libertyvps.net?

Depends for what?
It might appear that you are looking for managed solution and in this case I would recommend you to have a look at speedehost.com managed vps hosting. They seem to have really nice plans.

Have a look at VPS accounts from hostingsource.com and kvchosting.net.
You will find out the availability of their systems administrators and send them a support ticket and see how fast they respond.

I like
qhoster.com
cloudarion.com
They have good set of VPS services and option to chose the location.
I assume that would be ideal for signing up.

The best VPS provider is scalahosting.com. They have user-friendly SPanel, high speed and uptime and quality support.

I'm using cloudarion.com SSD VPS to host multiple websites, including a couple of my clients. Their servers are reliable and fast for their 'shared' hosting classification (dedicated/virtual would be a lot faster), and overall everything works great.

VPS accounts from asvhost.com and luxhosting.lu are solid and reliable enough to sign up with.
Their service is excellent and server is almost 100% up and running.

Here are a few things to consider while selecting the best VPS for your project.

1. The amount of resources you'll need. Obviously, your website will use up server resources.
2. Operating system selection.
3. Management of backend operations.
4. Your web host's location.
Customer service is number five.

DedicatedHosting4u has these all qualities in their server in my opinion.