Depends on the project size. A big piece with fancy stitches, I use a frame. A smaller piece that's straight cross stitch I just hold it in my hand. If I'm stitching an ornament that has a lot of metallic braid and beads I use a 5 inch Hardwick manor hoop.
I use Q Snaps. I have tried stitching in hand but my stitching looks so much more uniform and better using the Q Snaps as I have gotten used to them and how much tension to do on each stitch with them.
I stitch all my projects in hand. I dislike hoops and I think they ruin your stitching. I learned to cross stitch from a master stitcher and I'm glad she taught me to stich in hand. :)