HP Pavilion 14-ab057ca is a good choice. It has :
- Intel Core i5-5200U
- 750 GB HDD (if it you don't mind breaking the warranty, you can just change it)
- Intel HD Graphics 5500 (Can runs recent games pretty fine, even if it's reputation says the contrary)
- Bluetooth and Wi-Fi
- Blu-Ray drive (compatible with DVDs)
- I can play "Just Cause 2" during 2 hours on battery. Battery life isn't a problem
- Linux runs smooth on it (Startup in only 10 seconds >_<) (You're gonna need the "wl" driver for using the Wi-Fi card on it. Advanced touchpad features are gonna need little hacks)
- 1 SD Card slot, 3 USB ports
- You can boot from the USB, not sure about SD Card.
- 6 GB DDR3 RAM (You can change it)
- A touchpad (You can use two-finger scroll, like on Mac)
I bought mine for 650$ CAD (approximately 450 $ USD)