I'm thinking of purchasing either a gumstix or a VEX starter kit and need some advice

. It will be for my personal use, mainly for programming tinkering and experimentation, but could be used as a coprocessor if our team wants it on the robot. I know the gumstix is more versatile, but the VEX would allow me to do more right off the bat. I'm leaning toward the gumstix for the versatility and because (from what I can tell) it has more applications. Any suggestions?