[maddz]

As others have said, keeping all my library (~1600 titles) on the reader is the way to go for these reasons:

1. Most books I have read at least once; especially earlier works in a series when the next comes out. Besides, if a book is worth reading in the first place, then it's worth reading more than once (sententious Victorian authors aside.) Very few of my purchased books end up in the cloud - it has to be truly dire for that to happen, and I'm usually quite good at spotting stinkers before purchase.
2. Greek beaches tend not to have free wi-fi. Wi-fi in the accommodation isn't much better unless you're in a large hotel. (Besides taking the iMac will use up my baggage allowance.) Virgin mobile roaming charges are extortionate (they're being challenged, but that won't be resolved before my holiday), which means I will be relying on wi-fi not mobile data while I am away. In any case, not everywhere has a good signal and my phone is still under guarantee so I can't use a disposable SIM.
3. The Kindle & Kobo apps on the iPad & iPhone contain less than half my purchased content, and the thought of sending all the rest to personal documents makes me blench. (I've been acquiring e-books since the Palm m500 days).
4. I'd prefer not to read on tablets on the beach - the Icarus will work better in bright sunlight.
5. I can read a standard mass-market paperback in less than 2 hours. A fantasy doorstop will take a bit longer. A 10-day holiday will mean I need a minimum of 100 books to include in air time and hanging around airports. (Pre-ereader days, at least 50% of my baggage allowance was books (plus the couple of titles being read in-air) - and I'd routinely run out of reading material during the holiday. Book swaps in the resorts (if there were any) tended to summer blockbusters not genre fiction.)

For me, keeping my library on the Icarus is the way to go, especially as it is the consolidated source for all my books (apart from omnibuses I've run through epub split, PDFs and graphic-heavy titles.)

Ah well, in 3 weeks I hope to have made a substantial dent in my to-be-read pile (most of the titles from Humblebundle & StoryBundle); I'm finding trying to read on the commute to be a bit of a chore - too many interruptions plus I have to keep an eye on where I am - so I now mostly read short story collections.