It's going to be very hard to find a quality provider who provides unmetered bandwidth and a Windows Server license at that price. You might look to raise your budget to somewhere between $200 and $250, and you'll start to see things come into range.
I am looking for the most reliable and top dedicated server provider.
the minimum range of specification I am looking for is as follows:
Quad-Core 2 x E5506 2.13GHz
RAM minimum 16 GB
HDD 2 x 1 TB HDD
Bandwidth 100 mb Unmetered
OS: Windows server standard 2008 r2
my budget is between $130 - $150 monthly
Can you suggest of any?
Are you sure you want those CPU's? They're 3 generations old, and 4 generations behind the current Xeon E3's. Any E3 1230 and up will handily outperform 2x E5506's whether it be a E3 v1, v2, or v3. You'll also need to pay for two Windows licenses with two processors.