In the beginning when I purchased the plan from Oxtrys, I went with entry-level plan, but then I found that I need to switch to another plan as per the requirement of our company. After moving to one level up, we got what we were looking for. I think choosing the right VPS plan should be done very carefully. Of course, the service providers know it better than you. So, I think taking their suggestion is helpful. But if you want, you can try that on your own as well.
Oxtrys has all the plans on a very cheap monthly rental. One can try any plan and then decide to upgrade. They provide you with the upgrade as you like. Try their services, they are quite knowledgeable.