iPad rubber stands

[Fantoni]

Hi, I'm going to buy a cheap stand for my iPad 3. I'm currently fascinated by rubber stands and I'm hesitant between the following products:

1. PadStand
http://www.padstand.co.uk/
http://www.youtube.com/watch?v=cSBKNT82rtw

2. Stump Stand
http://www.stumpstore.com/
http://www.youtube.com/watch?v=hL5JbOA2Ifs

3. Bluelounge Nest
http://www.bluelounge.com/products/nest/

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Here are my questions:

A - Do you have any experience with these stands?
B - Is the iPad really stable on them?
C - Are they compatible with the iPad 3?
D - Which of these stands should I buy?

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Thanks
F.