How to choose a wireless keyboard for PC?

[qqsugar]

I am considering to buy a wireless keyboard for my PC but I don't know how to choose a good one. I found 2 on the Internet:
2.4G Wireless Rii Keyboard with Touchpad for PC
and
2.4GHz Wireless Keyborad with Touchpad for PC
They look pretty good, but I don't know which one is better and more practical. What do you think about them and how about the prices? I need some professional advice. Thanks in advance.
Regards.

 

[MindoverMaster]

It all depends on what features are most important to you. Are you looking for a full keyboard? Laptop oriented? Programmable hotkeys?

IMO, that looks a bit weird. But it's all up to you in the end.

 

[ReikokuKo]

Define practical for you. I assume you need them for presentation purposes. If you give presentations where you are standing up, then the iPazzPort would be good, and if you are sitting or maybe behind a podium, go with the Rii keyboard.

What is it that you do where you need these instead of a standard keyboard?