I surprised myself by deciding I had to answer "Tablet" as I spend more time on my iPad than I do on anything else.
Sadly, at this moment, I have nothing that runs Linux, since my younger son needed a high-powered laptop which would run Windows 10 for his course and my almost-new Asus laptop running Ubuntu was the only one that would do the job.
I took over my daughter's old MacBook Air on which I have never been able to install Ubuntu so it dual boots between Windows 10 and MacOS. Additionally I have an iPhone 5 which only gets used for phone calls (and occasionally solitaire).
But this question made me think back to my computing lifetime.
I started programming on terminals connected to a Cyber running Control Data ITOS (Ineractive Terminal Operating System).
Then it was a CDC110 running CP/M 80.
Later an IBM XT ran a very early PCDOS.
Nondescript desktops of various flavours then ran MSDOS, Xenix, OS2, Warp, and Windows 2.0, 3.0, 3.1, 3.11, 95, 98, Me, NT 3.1, 3.51, 4.0, 2000, XP. (I by-passed Vista, 7, 8 and 8.1 because Linux was better!)
Workstations over the years ran SunOS, and later, Solaris, etc.
About the time Windows XP came out I began dual-booting my desktops to various flavours of Linux, having always preferred UNIX to all other OSs with which I was forced to work over the years.
At about 2006, I swapped from desktops to laptops and generally ran Ubuntu with occasional use of Windows only if it was unavoidable.
The iPad air was used for work in my delivery van during 2014 until I had a stroke and couldn't drive any more. It has become my main computing device simply because it goes everywhere I go and I can browse the Internet on a train or bus or while waiting at the doctors or wherever. Being retired these days, I now frequently ride an ancient motorbike and sidecar, and the iPad along with its bluetooth keyboard, is invariably with me in the sidecar wherever I go.

I run Ubuntu in a virtual machine. The physical box is a Mac Pro, powered by a quad-core Xeon X5. VM is Parallels Desktop (usually) but I sometimes run a similar Ubuntu installation within Oracle's Virtual Box.

I run a Mac Pro desktop for the usual stuff.
In the process of using a Dell laptop for Linux familiarisation (new to Linux).

1 members found this post helpful.

Ha ha, not surprised most of us are 'old school'.

Chromebook #1 but it runs Crouton Linux and boots up into Linux (Debian) on an external drive. 2nd would be my smartphone, and finally my desktop dual-booting Mint and MX-16.

I have to say laptop because I have two touchscreens and I love them. I also like my chromebook though because when I'm doing something on one of my laptops or notebooks it's small and easy to keep handy for looking things up. plus I've had two chromebooks and I'm used to using one.

Ubuntu desktops on System76 Meercats.

Laptop at work, desktop at home, and smartphone or tablet for social media only.

Desktop -95% of my work is documentation writing and editing. Laptop running most of the time handling torrent uploads.

Only a real computer will do. Years of development and huge sums of money finally produced large screens. Then someone had the idea of selling smaller and smaller displays. Making a lot of money out of turning the clock back. Now of course these miniature computers, combined with a basic 'phone, are advertised with bigger and bigger displays.
Now however, we are saddles with Web sites that look stupid on a large screen. Big chunky graphics that need scrolling on a 32 inch monitor. Internet banking is not the fun it was, when one page of figures takes several screens.

Ron Lebar.

Raspberry Pi 3B with Raspbian OS. Perfectly useable for routine browsing and text editing. Very low power consumption.

1 members found this post helpful.

My primary computing device is a laptop because it takes up less space than a desktop device.

First post.....Hi everyone.
I run 3 desktops and one laptop currently powered by Linux mint 17.3. The Desktops are 64bit and the laptop is 32bit.

I'm seldom without my smartphone for a quick search or as a timewaster when I'm out and about, but to actually get anything useful done at home computing-wise, I rely on Linux and my desktop PC.

While my wife and I have a laptop we use for travel, the cheapness of TV's has us spoiled. I have a very old desktop running Linux Mint 18.1 and am using a 32" TV for a monitor. It's relatively easy to see for a 74 year young man :-)

I'd guess that it depends on what you do with your computer as to which works best for you.