I just bought a lazer RTR from ebay and anxiously waiting for its delivery.

I've been looking around the internet and different forums for upgrades and hop ups. I may have done a bit too much research that I am confused with the different parts available.

I currently bought a tbr bumper set from ebay
(http://www.t-bone-racing.com/) since I have to "retrain" myself again in handling an rc buggy since it's been 20 years and I have not used a pistol grip controller yet.

Hopefully, I won't crash the car too much and the bumpers help me prevent any serious damages. They are the "training wheels" for RC racing.
Now, for other parts I am not sure what to get. I know for sure I will getting the aluminum front suspension holder since I have hear that is one of the first things to break. Now here are the other parts I need help in deciding.
Screw Set
titanium vs steel
Diff Balls
ceramic vs carbide
Tower Mount
aluminum vs alloy (unless they are both the same material, er, aluminum alloy?)
F and R Shock Stay (tower)
carbon composite vs aluminum vs carbon fiber vs graphite (may be the same as carbon fiber... I think)
C hub and knuckle set
alloy vs aluminum (unless they are the same)
Also, I also heard people suggesting to get the 10 degree c hub for better steering. Is 7 degree ok since that is the most they offer in aluminum.
http://www.rckenon.com/public_html/s...oducts_id=3193
I've been out of the loop for 20 years when it comes to rc's so forgive my ignorance.

These are the first things I will upgrade with my zx5. I am also getting a 2nd set of wheels and tires. I am going to get a NiMH battery and charger since I heard they are better than NiCD. The next step would be to upgrade the bearings and motor.