So the differences
1. lenovo (im assuming a full hd screen) 15.6"
- slow hard drive 5400rpm, lesser quality build(IMO), worse gpu, no backlit keyboard
+ slightly faster cpu, blu ray player, cheaper, also I have always seen a 30-45% off coupon on the lenovos.
2. Asus (the second one) 17"
- negliably slower cpu, worse gpu 15% then the msi
+ backlit keyboard 15% better gpu then the lenovo
3. MSI GT70 17"
- negliably slower cpu
+ multi color backlit keyboard, "better" network card best gpu
4. Xotic pc 15.6"
this depends how you customize it
NO OS add $105
slow starting hdd i'd up to the 500 or the 750 7200rpm
cash discount has problemns
and slightly slower ram or an extra 25
with the config that I did it was about $1240
My thoughts the GT70 is the best computer, the lenovo is the worst, Lenovo is cheap, I do not know shipping charges I suggested the sager because shipping was free to the us, and it was cheaper. Since you can afford it I would avoid the lenovo unless you want a blu ray player.
My other question is do you have to use newegg.ca? if so then get the msi via xotic pc because its 1600 on newegg.ca, you also could get the sager on xotic pc.