I'm using an Apple MacBook Air M1 (2020) with 16 GB RAM and 1 TB SSD and a Lenovo ThinkPad X1 Carbon with 16 GB RAM and 1 TB SSD at the same time. As an intense power user, I care less about budget and more about the quality of the machine I use.<p>I ordered myself the MacBook at work and privately purchased the X1 to put Ubuntu Linux on it (curious about the M1 and having had a great experience with each of a range of past ThinkPads - X61s, X220, X230, T41).<p>Both machines are very light, and not very rugged (for ruggedness, go for a Dell Latitude E6400 XFR or E7450). Both fell one time each, the X1 had no visible marks, but the MacBook Air now has a visible dent just above the logo. Thankfully, both machines remain fully operable.<p>The X1 is great for Linux, and that's my preferred platform. I'm biased towards that because it's not proprietary, but not out of purely ideological reasons, I just want to make sure the platform continues to exist. Thankfully, the Mac also has a Unix under the hood, alas often things are in weird locations or not installed at all, so I feel less "at home" on MacOS X. Also, having been a dual Linux/Mac OS X user since 2008, I find the usability of Mac OS is decaying - many things are hidden in non-obvious places. For example, it's not helpful if scrollbars are hidden and you have to exactly hover over where they ought to be in order to make them visible first - when you are on a call and need to pull up some data quickly, this is distracting.
The Mac has longer battery life, and is often superior when discovering a WiFi network nearby; it's audio also works flawlessly. In contrast, on the X1 under Linux, occasionally the headset plugged in isn't instantly recognized without some fiddling.<p>Both machines are very fast, with the M1 being without equal. I notice it mostly when installing/updating new software, as heavy compute jobs are usually done on clusters or in the cloud nowadays.<p>I end up using the Mac mostly for e-mail, making slides and going on Zoom calls, whereas any development work tends to happen more on the X1.<p>Neither is a perfect machine. I'd love to have a Mac with a proper keyboard, or a ThinkPad with an M1 chip, and the former would be more of an improvement than the latter because CPU speed isn't the bottleneck for my laptop usage profile. For the time being, I shall continue to carry two laptops.