That first bike is horrible, It's hi-ten steel, which is generally ****ty, and it looks like it has a 2 piece crankset, which if it's made the same way as one of those Target bike's cranksets then it'll start developing play and fall apart on you in no time. Plus, they feel really ****ty too. I'd really recommend searching around on CL, good stuff usually pops up there and you can nab an okay bike for $150, or, as in my area, a nice lugged conversion for $200.