Can anyone personally recommend based on their experience dedicated Wordpress hosting? I'm not looking for generic web hosts, and I'm really looking for suggestions based on personal experience rather than providers you've heard of. My customer is currently using Bluehost VPS, their support and servers are not sub-par.

The key is decent performance and good support. The website hosted is mostly to be consumed by people in Asia, Europe and the USA, so ideally hosted in the USA or Asia.