What are your dedicated server requirements and budget? I could have suggested you the best fit plan if your requirements were known. Honestly, I never heard about the web hosting providers you mentioned though you can always do research on company's review, web hosting support, security, up-time records, etc.
If you want other excellent alternative, I would highly recommend you
AccuWebHosting.com as most Reliable Windows and Linux dedicated server provider. AccuWebHosting is known for offering the top notch hardware specifications at most affordable prices.