[dwarrel]

Ive been playing with the idea to buy a ereader for my studie for a while. A lot of my books and information is also given in pdf forms. So i was hoping to spare some money buy using a ereader instead of buying the books.
Now since im a student i cannot afford buying a new device. So with a bit of luck i found two 2hand ereader the dr1000s for 200euro or the iliad 2th for 150 euro. Both are around a year old and not much used.

But i still have a few questions i was hoping i could get help with.

First off are these prices reasonable?
Does anyone have experience with using one of these two devices as a alternative to study books?
Is there any information about how long most these devices last? (Like the first ipod generation had a reputation of breaking after 1.5 year, its a lot of money for me and since its 2hand i wont have warrenty.)
Do both devices run linux? And are they both evenly editable?
Do they have a bookmark function in wich i can quickly switch from page A to B and how many bookmarks are possible?

Also any tips and advice about wich one to choose would be more then welkom.

Many many thanks in advance
Greets Dwarrel