If you have a desk/table already which you'd prefer to keep, consider one of these:
https://www.ergodesktop.com
They won't win awards for looks, but these are as sturdy as they come. The primary benefits, for me, are that they easily slide around on the existing surface – which is fantastic considering the name of the game is regularly changing position. It's also fantastically convenient.
Also, I like still having a low work surface while my keyboard/display are elevated. I can keep papers/books/gear on the desk, stationary, while still switching between sitting and standing at the keyboard.