I have 3/4 and another on the way. A Bernina 730E, so it does embroidery too, my older Bernina 1260 that I tend to piece on, a Featherwieight, new to me this summer, and intended more for taking to workshops, plus an overlocker.
The one on the way is an HQ16 Sit Down. I don't have room for a long arm as such - well, not the frame etc., but this new one will give me all the space to shove my quilts under it, and it's set in a table that measures 36in x 30in.
I am already used to FMQ, so that holds no terrors, and the other advantage will be the bigger bobbin - it holds 2 1/2 times more than a regular one. I can't wait for it to arrive.