Work:<p>Laptop model: Dell Precision M3520<p>CPU: i7 7820HQ 2.9GHz<p>RAM: 32GB DDR4 (upgradeable)<p>Screen: 15" 1920x1080 matte<p>Comments: If you want something fast to get work done on, I cannot fault this machine. The keyboard is great, the chassis is a good size, shape and weight (I like "traditional" laptop designs), screen is very readable, touchpad works well, hardware is expandable (HDD, SSD, RAM and wifi card), has lots of ports (3x USB3 A, HDMI, Thunderbolt 3 USB-C, ethernet, even has a VGA port!). Battery life on the Intel GPU is 4-5 hours, which is good for the power it packs, and drastically lower on the nVidia Quadro card (I keep it set on the Intel since I don't need graphics performance). I run Ubuntu 18.04 on it with the Cinnamon desktop environment. I use almost every feature of this laptop on a daily basis. The only thing I dislike is the pointing stick, which is oversensitive and not adjustable, so I ignore it.<p>---<p>Personal:<p>Laptop model: Clevo P641RE<p>CPU: i7 6700HQ 2.6GHz<p>RAM: 16GB DDR4 (upgradeable)<p>Screen: 14" 1920x1080 matte<p>Comments: powerful, compact and extremely expandable, but perhaps too far down the 'power is everything' route. Battery lasts 1 hour on the nVidia Geforce 970m GPU even at idle, and 2 days in sleep mode. Doesn't work on planes (fires up and clicks off, even with the battery charged). 4x USB3.0 ports, HDMI, ethernet, 2x DisplayPort. Awful keyboard (requires very firm presses), passable trackpad. Good screen. Spec'd to be powerful enough to last me ~5 years. Also runs Ubuntu 18.04 with Cinnamon. Has a SATA SSD for primary and smaller NVMe disk for Steam. 10/10 performance, 5/10 usability.<p>Laptop model: MacBook Pro Retina 2014 15"<p>CPU: i7 4870HQ 2.5GHz<p>RAM: 16GB DDR3 (soldered)<p>Screen: Retina 15" glossy (2880x1800)<p>Comments: Extremely portable, sturdy and usable. Great keyboard, touchpad and extremely nice screen. Fantastic battery life for its age. Decent ports (2 USB3.0, HDMI, 2 Thunderbolt 2). Lightweight, portable and fast. Has MagSafe power. Gets very hot in use and the metal case is not suitable as a laptop. MacOS GPU switching works very well. Runs Mac OS 10.14. Crippled by Mac OS restrictions and inability to upgrade parts (RAM, SSD is proprietary, battery is glued in) plus limited expansion (nobody got behind Thunderbolt 2, did they?). Probably Apple's most balanced and usable offering ever.