About future hostingFrom July 19, t'll be hosted either on MCBox with 10 slots and 640 MB RAM or somewhere else.
Quontex mentioned Admix was good...
http://www.minecraftforum.net/topic/217371-admix-hosting-aus-247-support-ssh-access-sale/page__p__3274249__hl__admix__fromsearch__1#entry3274249However, they're not on the list of approved hosts on the forums, and their prices start at 49 US$ pr. month with 20 slot servers, which is far too much.
You mentioned that their control panel was good, and I see that it's McMyAdmin, so I'll try looking for other hosts with that.
I found an McMyAdmin demo:
http://phonicuk.com/McMyAdmin-Demo/It looks good, but I don't see any world upload or download option. It also costs 3 US$ pr. month...
I checked BroHoster's "stone tier":
Stone Tier - $6.00/mo - 8 players (256MB RAM)
Idk how it would possibly get 8 players on 256 MB RAM, when we crash if we're just 5...
To be honest, I'm fine with MinecraftBox. It doesn't have a good panel, but I don't need that either, when I'm the only admin. And I don't think we need more admins on the server.
I've checked Multiplay.
You can choose slot count and max memory independently. 8 slots + 600 MB RAM is 8.88 Euros for one month. Compared to MCBox, where 10 slots + 640MB RAM = 9.86 Euros... I'm not sure what we need.
Multiplay has Teamspeak 2 and 3 available. Mumble is free for the number of slots, but we haven't used it yet on the MCBox server. Teamspeak costs 1.25 for 10 slots. Well, play around with it yourself and tell me what you think, and check the features of this host.
Prices:
http://www.multiplaygameservers.com/order/game-server/mc-minecraft/Features:
http://www.multiplaygameservers.com/game-servers/mc-minecraft/ and
http://www.minecraftforum.net/topic/123405-multiplay-ssds-phonesupport-worlds-largest-host/However, they don't use McMyAdmin, but Clanforge, which I don't know anything about.