Cloud Storage Options

I have a drive that is filling up full of photos and short video clips (over 300Gig right now). I want to move these to an external drive but also have that external drive backed up. It might be nice to have a service that would allow me to backup some of my other computers, and access files from other devices, and share folders with other people or the public. This list below is in no way a comprehensive or complete examination of the options but it does give a good price comparison. My ISP (iiNet) and the ponderous national ISP (BigPong), both over charge by a long shot, however the price range of other services varies significantly.

Cost/yearStorageTypeInc Ext HDNr ComputersShareNotes
BackBlaze$60UnlimitedSync onlyYes1NoIncludes external drives!
Box Net$180500Gigdrag drop + syncUnlimited
Carbonite$72UnlimitedSync onlyNo1Australian servers
Dropbox$240100GigSync only NoUnlimited Yes
iDrive$180500GigSync + ?archive?5
LiveDrive$1602000GigSync + archiveUnlimitedYesBriefcase
LiveDrive$96UnlimitedSync onlyYesUnlimitedYesBackup, +$1.50 per extra computer
MediaFireNote really a backup service but a sharing service
MozyHome$120125Gig3
MyOtherDrive$110500GigSync + archiveYesUnlimitedYes
SafeCopy$70300GigSync + archiveUnlimited
SkyDrivefree25Gigno tools so farUnlimitedMicrosoft Windows Live, 25Gig free
SugarSync$400500Gig
ElephantDrive$200500GigSync + archive5Dodgy website
KeepIt$96Unlimited?SyncNo1?
SpiderOak$460400GigSync + archiveYesUnlimited$100 for 100Gig + $10 per month extra 100Gig
MyPCBackup$60??UnlimitedSync onlyDodgy website does not properly state pricing
iCloud$10050GigBah