I own the Porter Cable and I really enjoy it. This is the first scroll saw I have owned. I have had this since December of 2015
To me it is not to loud, the vibration can be annoying depending on the speed. Changing the blades could be easier but like I said this is my first scroll saw so I have nothing to compare to, I do own other Porter Cable tools and am happy with them which helped in my choice plus I didn't want to lay out $600 to $1400 for a first time saw. Now that I have come to enjoy scroll saw work I am looking at upgrading not sure to what yet. You might want to check out the saw reviews here on SSV.
Mark