Better Webcam?

[Specialk]

I am looking to invest into a nice Webcam for streaming and I am debating between the Logitechs 910 and 920. Not sure which to go with. Any1 have any comments about these? Or recommendations?

910:
http://www.newegg.com/Product/Produc...82E16826104385

920:
http://www.newegg.com/Product/Produc...82E16826104635

[Misen]

I wouldn't spend to much... Usually the webcam stream is crushed into a corner somewhere and will not require something high end.
You can get a great looking feed with bare essentials.

Here is one of my very first streams with a 20 dollar webcam on an old quad core

http://www.twitch.tv/imacosmonaut/b/304350787