I have a few things that i run in production, and also get a fair amount of traffic always wanting to who people go to for there larger vm size. Starting above.
2x cores(vCpu) 2gb ram any disk size. 1tb bw kvm/xen
I am not looking simply looking in the lowend price but sometimes you started with the provider and grew into a bigger vm. But looking for the hosts that have pricing in the lowend for test vm.