with my $120.00 Harbor Freight model CP 42202. It's useable space is about 26" X 18".
It needed some early mods because initially it would leak everywhere, even with the dedicated vacuum I added and exhausted outside through a hose.
I took it apart, seam sealed everything. re-weatherstripped the door and bought several pieces of window glass cut to fit from local hardware. I found the protective plastic for the glass would get real cloudy very quickly so I prefer to change a $9 piece of glass every 25hrs or so. (25hrs of bead blasting is a looong time!)
I use aluminum oxide in it mostly. Glass bead wouldn't be as hard on the glass window, but it doesn't cut as well on the corroded parts I've taken off my old girl.... or the other rusted, pittted items I find it so useful on.
Another thing I've found helpful is to thoroughly degrease any part and knock off large chunks off rust first. This way the media stays useable longer before I have to sift out the chunks.
If I had a large enough workspace I might appreciate a bigger glass bead cabinet but for me it's just as well to take the sandblaster outside to do larger pieces.