I've used alpharacks and considering the performance of their VPSs, I'm sure they're heavily overselling their services. Same is the case with i83 and their cheap NATed VPSs.

On the other hand, I've been using Frantech/buyVM and the dirt cheap $2.50 VPS from vultr, and never faced any problems with them.

Alpharacks is super spammy and IMO a bit shady. Do not give them an email address that isn't specific to them.

Agreed. Also, Alpharacks has regularly shut down servers of mine and had to give me new VPSes with 100% data loss on the previous servers.

Its a GreenValueHost repeat :c