[s-cars] Travel advice from Denver to Philly area

[Jay M]

Hi everybody,
 
I am going to be driving my "New" Audi (141,000 miles) back to its new home  from Denver to Allentown, PA (50 miles northwest of Phila) this weekend. Weather forecast looks fantastic the whole trip so snow/blizzards are not a factor. Mapquest shows the shorter of the two best routes by about 45 miles to be Interstate 80 which I have taken many times from PA to Indiana but have never taken I 80 further west than that. The other alternative is Interstate 70 which I have never taken out west. Has anybody tried both routes that can opine on how the ride and traffic of I 70 & I 80 measure up? Maximum Speed and Minimal Traffic are the keys I am looking for. Thanks.
 
JM