[mehdivinci]

Hello everyone , I'm new in this forum and I want your help!
Please help me to choose one of this devise which is perfect for me!
Tanks a lot!
I'm a student in electrical engineering and I want a devise that have a perfect performance in showing PDF (including scanned book, scientific article, Table, diagrams,etc) and also I'm starting to read for English degree so I want it have some speaker.
I had some research and seen a lot of review and comparison between some devise but I can't choose!
I found this devises:
1. kindle DX Graphite
2. Pocketbook pro 902 , 903 , 912
3.onyx boox M92
which one do you think is better??

kindle Is:
1.Fast
2.Very popular
3.a bit lighter

But:
1. It is old
2. Not touch
3. Not so good looking (I think)
4. Doesn't support every format
5. The biggest thing , It doesn't have Wi-Fi.
6. The PDF review is not as complete as the other devise

pocketbook is:
1. Nice
2. better operation system
3. better support of PDF files
4. more support format
5. has wifi
6. touch (903,912)
7. new devise

But:
1.The worse thing is that it is really slow!!
2.It is not so popular devise


onyx boox M92:
1. I like its shape!!
2. It is faster than pocketbook! (CPU 800 MHZ vs 553 MHZ in pocketbook)
3. has wifi
4. touch
5. have a lot of thing for PDF
6. support a lot of format

but:
1. It has some bugs (I read about them in this forum)
2. It isn't popular name at all.
3. I don't know how the support is in this company
4. The speaker is very bad place (In the back!!)



these are the most thing I found about this devises!
If you have some suggestion about these devises , or you know about other devise , I will appreciate that guide me please!
It is really important to have one ereader in next month , so please help me!
thanks a lot!