I use a wide range of papers, but perhaps my favorite is a 100% cotton, 20lb paper made by Southworth. It has an excellent finish for typewriting on, and really reminds me of some typewriter papers I have come across. The lighter weight makes the typewritten impression so much more obvious. It's beautiful. And- it's only around $15 for an entire 500 sheet reem at WalMart! I am not a huge fan of Walmart, but a quality American made 100% cotton paper for that price, I can't resist the temptation!

I've been using stationary with letterhead that a friend printed for me using his amazing linotype machine and a letterpress. It's good to have a pal who's a fine art printer! He turned me on to the French Paper company. They have lots of fun fancy papers. https://www.frenchpaper.com  Honestly though, a nice vintage high cotton content paper is my favorite. I need to try to find some more. A lot of what I've been typing lately is correspondence, so leaning heavily on my stationary. With matching envelopes of course. They have the same design of my Hermes Rocket on the back that I'm using for my avatar (bigger of course). I'd love to have a few other of my typewriters on envelopes so that I could use a Leterra 22 envelope for letters typed on my Lettera 22, a Hermes 3000 envelope for letters typed on it, etc etc. Probably not happening anytime soon though.  

Usually multi-purpose, but for personal messages, I've been using paper from a cheap unruled writing tablet.  It's so thin that the letters perforate it. Without care, the letters would disintegrate.   If it means something to the reader, they would give it care. 

I would love to have a regular-width roll of multi-purpose. I used to write stories for people Kerouac-style on a roll. 

 

I use the exact same Xerox paper for my daily typing. It works very well with typewriter ink, and even the fountain pen ink I use when editing what I've typed. I also like its heavy weight because I type on both sides of the page. And finally, it's a good choice for a backing sheet since it can withstand numerous pages of use before there's a need to replace it.

I like to use Tomoe River paper. It was originally designed for fountain pen use, and is much thinner than regular paper. But at 52gsm, it is a very nice paper to use, particularly for correspondence.