Ending today, Microsoft Store cuts up to $600 off a selection of laptops and desktops as part of its Mother's Day Sale. (Prices are as marked.) Plus, all items receive free shipping. A couple of best bets:

• Lenovo Ideacentre Skylake i7 Quad 3.4GHz 27" 4K UHD AIO PC w/ 16GB RAM, 192GB SSD + 2TB HDD for $1,599 ($300 off)
• Alienware Skylake i7 Quad 2.6Ghz 17.3" 4K UHD Laptop w/ 16GB RAM, 256GB SSD + 1TB HDD for $1,899 (pictured, low by $171)