So, my server is up for renewal in a few weeks., and it is very expensive. I think what I am using is too much for my forum and I can reduce the service I have for a cheaper price. But not sure what to use.....

So I am wondering what you guys are using, and what companies you may suggest for running wpforo. 

My sites are around 100GB in total. But what computing power would I need to run the forum fast and efficiently at a good price? 

Right now I am using A2 Hosting, Mach 16 VPS