[Manal]

Actually, I prefer for Vultr if you want another lower price.
Vultr's price for 512MB RAM is only 3.5/month, and if you're not going to use more than 512MB RAM, I suggest you take Vultr instead of DO.

I don't really know about the differenciate between those two. But, Vultr's CS for medium priority is a little bit slow, since customer services are at US and using US time. So for customer like me, it's a little bit annoying.

Fun fact: Vultr open their customer services on 9 AM or 8 AM US time, and it's 10 PM in my location. So I can only contact them once a day because of the time.

For pricing and efficiency, I would support Digital Oceans. I don't really find any reason to go with Vultr.