Dont get a short arm machine. Threading, bobbin, etc. are a big hassle when on a long arm table.
I have an Imperial table and the rods are not sturdy and way to big around. The ends are not going to last long for adjustments. It took an expert from the shop 6 hrs to put it togather. It took way to many screws.
Get at least an 18 in throat machine.
I do like my carraige, it moves very smooth. Now I need a bigger throat machine, just cant afford it.