I don't know anything about them, sorry.
But for a minecraft server (or any other server) i recommend Multiplay
Their deals are reasonable, its got great support and an extremely useful and relatively easy to use control panel so you can switch mods, set permissions etc. easily. I have rented one in the past for six months and my friend is currently running one at the moment. Multiplay is also the most popular server provider in the UK, so there's a large forum and you won't be getting screwed over. I believe PCG is also hosting all of its servers from there.
i5-2500k, HIS 6870 1GB IceQ X Turbo, 8GB RipjawsX 1600Mhz, Asus p8p67 Pro, 2TiB Samsung HDD, Antec 650W PSU, Coolermaster HAF 912 Plus