What should I upgrade next?

[Tesher]

Hey guys, I was hoping to get some suggestions/opinions on what upgrades you think I should make on my gaming PC...
I'm having trouble deciding what to upgrade next, I'm just wanting to keep everything as up to date as possible...

Case - Coolermaster Cosmos S
Mobo - Asus Maximus II Formula
CPU - Q6600 @ 2.94GHz
GPU - EVGA 480 GTX FTW
RAM - 4GB DDR (2GB PC2-6400 & 2GB PC2-5300)
HDD - 150GB Raptor (OS) & 2x320 GB Raid-0 (Storage)
PSU - Antec TruePower Quattro 850
Optical - DVD burner & Blu-ray burner
Cooling - Custom Watercooling (MCP355, Feser XChanger Triple 120mm Radiator, Swiftech Apogee GTZ)
Other - Scythe Kaze Master Temps/Fan Controller
Keyboard - Logitech G15 (old model)
Mouse - Logitech G7
Monitor - 27" Viewsonic (1920x1200)
OS - Windows 7 Pro 64-bit

The upgrades don't necessarily have to be performance based (cosmetic changes are an option as well)... I've personally considered a SSD, new set of RAM, a motherboard/CPU upgrade or just doing some better cable management/lighting (I can post pics for reference if needed)... Let me know what you think - there are no wrong answers

 

[Dangman]

I'd go with a SSD. After that, an upgrade to a Core i5 + mobo + DDR3 RAM.

Why RAID 0 for storage? That just seems like a recipe for failure.

 

[Tesher]

Thanks for the response!
The raid-0 isn't really storage shouldn't have labeled it that way... It is basically an extension of my program files folder that I use solely for games and other applications... I have a 1TB eSATA drive that is my real storage (i.e. backup) drive... Are SSDs a great improvement over 10k drives?

 

[Dangman]

Yup SSDs are a serious improvement over 10K drives.

In fact, many consumer 7200RPM drives will outperform your old Raptor drive actually.