The My Book Live from Western Digital is a good network drive you can use with the ipad. They have an app in which you can view, play, link to, email, print, download, and open in any compatible app any file or media that you store on a 1-3 TB hard drive connected to your router which you can acess anywhere you have the internet. They also have a Photos app with which you can view, email, open in, post to facebook, save to camera roll, etc. any picture you have stored on the drive, and also upload any photo/video from your iPad to the drive. The amount of storage, prices, and apps for these drives are way better than the Seagate drives or even the wifi drive you mentioned in your post. I've used a Goflex Satellite extensively and tested a Goflex home and they both pale in comparison the WD MBL or MBL Duo. The My Book Live Duo model is a 4-6 TB version of the other one.