Libertyvps.net offers KVM VPS that have the option to run Linux and Windows, they only use high quality hardware and high speed gigabit connections. Like this package: Bronze Windows VPS plan: CPU Cores - 1 Core, RAM - 1 GB, Disk Space - 25 GB, Bandwidth - 2 TB - $24.99/month.
They use the Ecatel Datacenter, located in Amsterdam. Ecatel uses the best networking equipment, hardware and transit providers.