Looking to get a Mac Book Pro, travel every week for a few days... The most intensive processing would be DVD copying or ripping for storage for the home media center...
The quad core i7 15"/17" MBPs would be significantly faster than the dual core i5/i7 13" MBPs for transcoding video DVDs. But a 13" MBP would be fast enough (one 2h film per hour), unless you don't have time to wait.
Has you account been hacked or why is your post this garbled now?
And there is not much difference between an i5 and i7 on the 13" MBP.
Take a look here: http://www.primatelabs.ca/geekbench/mac-benchmarks/