Welcome to the forum from TN. Buy the best scroll saw that fits your budget. I started out with a $200 saw and within a week, returned it and bought a DeWalt 788. Ihave had and still have the saw, but three years ago purchased an Excalibur EX21.
It is 38 degrees in the shop this morning. The EX21 is still in the entry way. I will work on something, but still not sure. Weather report says 70 by the weekend.
I have several projects to cut and the garage temperature is 41 degrees. For the first time ever, I brought the EX21 inside to do the cutting. I will have some clean up, but at least warm.