When comparing Cloud at Cost vs Vultr, the Slant community recommends Vultr for most people. In the question“What are the best VPS providers?” Vultr is ranked 3rd while Cloud at Cost is ranked 19th. The most important reason people chose Vultr is:
Vultr consistently has great results in benchmarks compared to other VPS providers. It's true that VPS benchmarks are famous for not being very credible because they depend on a myriad of outside variables (most notably instances hosted on the same hardware and distance from the data-center). But still, Vultr scores consistently high in several different benchmarks such as [CPU performance](http://public.due.io/vps_comparison/results/sysbench_cpu/v1024_sc.txt) and [MySQL compilation times](http://public.due.io/vps_comparison/results/mysql_compile/mysql_compile.txt).
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro Cheap. Like, really cheap...
With the coupons they offer all the time you really can't beat the price when you consider its a one time fee.

Pro Good variety of OS selections
You can load several variants of Linux (Ubuntu, Cent OS, Debian, etc.) and they even let you throw Windows 7 on them (security nightmare, but whatever). You have to enter your own Win 7 key.
Pro Great performance
Vultr consistently has great results in benchmarks compared to other VPS providers. It's true that VPS benchmarks are famous for not being very credible because they depend on a myriad of outside variables (most notably instances hosted on the same hardware and distance from the data-center). But still, Vultr scores consistently high in several different benchmarks such as CPU performance and MySQL compilation times.
Pro Wide geographic coverage
Vultr boasts more than a dozen datacenters across the world, ensuring maximal geographic coverage and the chance to increase loading speed wherever your largest demographics may be in the world.
Pro Your own IP Space (BGP AS)
You can announce your own BGP space across all of Vultr's datacenters worldwide.
Pro Custom ISO support
Pro Bitcoin payment support
Vultr supports Bitcoin payment. If you want to be extra careful about security and the security of your credit card/bank account/paypal account you can pay with Bitcoins.
Pro Quick-deploy apps
Vultr offers stock "apps", such as LEMP, Wordpress, Mincraft, Webmin, ownCloud, etc, that can be deployed instantly.
Pro Daily automatic backup
Vultr is capable of running daily backups with two most recent backups stored. Time of backup can be changed.
Cons

Con Service
You get what you pay for. Don't expect stellar customer support or blazing fast boxes. I only use these for really basic things. I have one running GitLab to back up my code, a couple running Cloud 9 so I can dev straight on the server, and one as a proxy for when I'm on public wifi or something. Don't think you are going to run your company's web site on these servers.
Con New hardware
Compare to DO hardware are old.
Con Sub-par documentation
While Vultr does offer documentation, it's not of a very high quality. Not everything is covered and it's more aimed at advanced users. So it wouldn't be a good choice for a beginner.
Con No billing-support on sunday
Added 30 dollars of funds to a new account on a Sunday, however Vultr did not allow me to deploy because of a insufficient funds message. Added support ticket, received the answer that billing related issues are only resolved on workdays.
