Well, a few months after a fairly buggy experience with icloud photo library, I decided to poke the hornet's nest and play around with it again. In general, the service is a lot smoother now. I initially had problems with my photos on my iPhone apparently not uploading, until I realised the issue - the photos app has to be active for your photos to upload to icloud (sounds quite stupid in hindsight, but I thought I could lock my phone and leave the process running in the background). So I set my auto-lock timer to "never", plugged in my iPhone, and left the photo app running for a few hours. Overall, it took about 4 hours for my 2500 photos to upload. I then enabled icloud photo library on my iPad to have the photos downloaded. I noted that the iPad will initially download low-res versions of the photo (so don't be alarmed). Afterwards, the full versions of the photos will then download. One interesting bug - in the browser version, I have white rectangles acting as placeholders for photos and movies I had already deleted from my devices, and I can't seem to delete them. All in all, glad to see Apple finally getting their act together, and I look forward to seeing their photos app for the Mac.