I am asking for your input.  I am going to change the exhaust system on my Yamaha Raider.  The stock exhaust is, well a stock exhaust.  The looks of the stock exhaust are fair, but the sound is very lacking.   The following four after market exhaust systems have caught my eye.  I like the performance of 2 into 1's.  However, the curved or swept pipes also have respectable numbers and the swept look blends nicely with the rest of the Yamaha Raider lines.  I also think the black pipes would look good against the silver and chrome of the Raider.

The short version is I can not decide and am asking for your help making the final decision.  Which pipes do you like best?

For the record, I have a Liquid Silver Raider like the one shown below.

Stock Exhaust on a Liquid Silver Raider

(What my bike looks like now...)  --->

<-- 1: Cobra Swept Speedsters

2: Road Burner Velocity Pro Black  -->

<-- 3: Road Burner Large Radius Black

4: Vance & Hines Big Radius 2-1  -->

So, vote and help me decide which system to invest in.  Thank you for your support.