Host Sailor is better.
It's a good service for a really good price.
Their support always responds quickly.
I recently upgraded my VPS hosting plan and after the payment in less than 1 hour, my new plan was already active.
However, at first when I wanted to upgrade my plan, they offered me some discounts and I opened a sales ticket just to inquire about the opportunities. I clearly wrote in the message (also in the subject line): upgrade my plan. And after the third message, they told me that it's only possible to use discounts if I order a new plan. It should have been more efficient if they would just say me this information in the beginning.
But overall I'm really satisfied with the service.