Got a 7D now and I use my computer for plenty of other tasks. eBay, Documents, Photo editing(Lightroom & Photoshop), etc.
May even try editing video from the 7D.
Currently have a Asus G73S. First Gen Core i7, SSD, GTX460M.
It just doesn't seem to have any pep anymore and runs VERY warm.
I've built a few PC's in the past, but not sure if a newer laptop would be worth it or not. Was thinking of trying a budget build. Maybe Under $700 including a monitor. Any suggestions? I haven't built one since a Q6600. Was actually faster than this laptop when I sold it.

definitely not worth the $ especially for video/image editing.

