Aftershock. Even if you up the RAM to 16GB, increase to 256GB SSD and toss in an external monitor (non-touchscreen), it would still be cheaper than the other options.
The 770M in the Toshiba is a more powerful graphics card but uses more power. Depends on what is important to you.
I would get a 24 inch 1080p monitor for around 300 or so. I find 27 inch a bit too big for 1080p. If you want to get a 4K display, check with Aftershock if the HDMI port supports it (needs to be HDMI 1.4). I personally have no use for a touchscreen. My fingers usually have more oil than Saudi Arabia.