To be honest, I have two fragnet servers (one survival, and one creative) and one fragnet Battlefield 4 server. It might be true that they're a bit more expensive, but their amazing support and nice control panel makes up for that by a long shot..
Have problem with installing a mod or something? Just open a ticket with the file attached, state your issue and you'll have a fix/reply within 15-30 minutes (that's the longest I've waited)
The servers are also extremely fast, I've never had lag on them (except once when I tried the max flight speed on the Powersuit and flew 12k blocks in 2 minutes)
so basicly, they're lag free unless you go in for it (I only have a 2,5gb ram server because I don't need more)
Fragnet is my #1 choice of server providers (had 2 others before)
I've not checked the prices up with other providers but the quality of fragnet is just fantastic.
Regards
¨~ Chris
Edit: Also forgot to mention that if you want a mod installed on the server, like FTB or tekkit etc. You can just press a button in the control panel, select the desired version of FTB and it'll be installed automaticly within 1-2 minutes. The config files may also be edited in browser via their file manager section of the server conrol.