I've never heard of Digital Ocean. Are they reliable? Do they have a DNS manager comparable to Linode? (I have no aspirations of running multiple Bind instances on my own, thanks).
I might consider moving off Linode for pricing alone.
They've been very reliable for us. Network is spiky (12-20MB/s at times), but otherwise, compared to roughly equivalent VMs (lscpu, /proc/cpuinfo, etc.) they are hands-down faster than AWS. In the limited testing we've done on AWS SSD AMIs (optimized for cluster compute), AWS wins on network and CPU, but at literally 10X the cost.
I've been evaluating them for the past 6 months or so and it's definitely one of the more stable cheap VPS providers out there. I believe they added a DNS manager a few months ago but I haven't used it as yet.
I might consider moving off Linode for pricing alone.