I had a Helium at Feral for a month and 3 times in the month the server crashed most likely due to another user consuming all the CPU and memory, i opened a ticket each time and support only replied to my first ticket, other tickets there was no response and looking at the "uptime" of the server it was reboot a couple hours later on each occasion. Feral do have a lot of users on each server, i have not tried seedboxes.cc so cannot comment on their service.