I agree that Mac Book Pro is a solid bet. But you're not going to get a decent one for under $1000. If you have (and want to spend) the extra cash to get a solid machine pony up for the MBP. DO NOT buy the 13" with the i5. Make sure you get an i7.
If you can't or don't want to spend the extra for the Mac, then do as Mystic says and look in to Asus. You can get a really great machine for around $800... just be sure to purge the bloatware when you get it.