Sli bridge connector?

[TalonHF]

Hey, so.
After doing some research on what would fit into my computer I found that i will be getting 2 of these

http://www.newegg.com/Product/Product.aspx?Item=N82E16814487076&nm_mc=KNC-GoogleAdwords-PC&cm_mmc=KNC-GoogleAdwords-PC-_-pla-_-Desktop+Graphics+Cards-_-N82E16814487076&gclid=CjwKEAiAqMajBRCdjejki6yjuDwSJACQeVukxQSnMghYCrbQJofXyBpsbja07dyxNTB5GGS1PfDYChoC-kPw_wcB

I just realized that i would need a SLI bridge and was wondering what the difference between these two and if the extra money is worth it at all.

http://www.evga.com/Products/Product.aspx?pn=100-2W-0021-LR
vs
a simple bridge band
http://www.evga.com/Products/Product.aspx?pn=401-MB-0033-01

Kind regards

Edit: (I didn't get a SLI bridge because I bought a pre built in 2011)

 

[Thaisnang]

The 30$ price tag maybe because it looks cool.There shouldn't be any performance diff. though.