errr..what mouse?

Yeap price is correct
Basically you are paying more for the extra LED which is way cooler since it follows the beat of the music or your APM
Virtual Surround. IMO this is how they work
It is done by adjusting the volume of the direction. Let's say from behind they sounded softer. If its front both speaker will sound equally volume but at a higher volume. The reason why they say the volume is higher is due to the virtual surround and not just give a ''higher'' volume. Haha for some reason I don't think this will let everyone understand the use of SC. Maybe come out a more detail review later
Which 3?

He mean Kana, Kinzu and Sensei.

forget kinzu or kana, if got budget abit just get xai.

then I guess even those cheapo china ones will tons of buttons will satisfy you?

RM300 for both or each?
That depends. If you take care of it, should be fine. Eg of taking care, wiping it regularly. Rubber Surface can be scratched easily 

SteelSeries 4H and SteelSeries Kinzu for FPS
Or
SteelSeries Siberia V1 and SteelSeries Kinzu, this is over budget of rm300 but not much
Regularly cleaning the mouse shudnt be a prob
But grips of the mouse are more to the side rail of the mouse
SteelSeries QcK for the win, choose which one suits u best. There are a lot of design to choose from

RM200, you can get either Steelseries 4H, 3H or Siberia in-ear. 

Try ModernoPC.

Not all. Only those with USB will be stated on the box itself like :

1) Steelseries 5H USB
2) Siberia V2 USB
3) Steelseries 7H USB

etc.

Steelseries 3H, 5H, Siberia V2 and 7H are among those that are using 3.5mm jack to connect 

Siberia V1 got mic. it's attached to the cable instead of the earcup(Sib V2).

Razer Electra - RM219
TB Z2 - RM199
falls under your budget.

Nice provided if you take care of it properly 
the metal coating easy scratched off
same as 4H but just white colour and Xbox version
Good for FPS
bad for music
Comfort wise its quite awesome 

do look at TB Z2 or Razer Electra.

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Added on April 2, 2012, 3:11 pm
SRP? will Xai be discontinued when Sensei RAW comes in?