RiftMC is a server that definitely deserves more attention than it's getting. Right now I'm one of few people (I'm NukaQuantum) who play on the server, there's maybe 4 or 5 other regulars. The server has a great plugin selection on all of the servers. I especially like the UI improvements on the skyblock server.

The server has:

• Survival
• Factions
• Skyblock
• Creative
• Minigames

Donor ranks don't completely imbalance the game either, they just add tedious task fixes, pretty much. Worth it when you see the list, plus the addition of a few "other" ( ) commands...

Anyway, the server IP is:
RiftMC.US

If you're looking for a fun competition, check out the skyblock server. We're only up to about 100 in terms of the highest level island, so things are still pretty competitive. (Yeah, I'm pushing the skyblock server above the others... I picked favorites.)