ORIGINAL: goirish
Looks like what you have posted that the 3003 is faster but also has more torque. So when you asked, do I want more speed or torque. With the 3003 you get the best of both worlds.
Oops, I'm kinda out of it today and for some reason I thought a bigger number was better. I should probably eat a better breakfast or something...
Also: Should I go with a 4.8v battery pack or a 6.0v? I can do either one because I have to cut cells out of my custom pack either way. It's a 2650mAh (I know it's overkill) 7.2v pack right now (I had a Radioshack Pro-Pulse car and refused to pay $25 for some crappy Ni-Cad's), so I can either cut 1 or 2 cells out.