Re: For those who build your own, which table saw?
I used to be an electric motor service technician. While I get your point, I have to disagree with the too broad statement. A series motor such as most skillsaws or drills can be compared based on amps. This cannot be done with either induction start induction run or capacitor start induction run motors such as are common on tablesaws. The capacitor start induction run motor has excellent startup torque and high efficiency while running. This type motor is common on Craftsman saws. Induction start induction run motors are also used on many craftsman saws because they are cheaper to make but reasonably durable. They have a serious weakness because startup torque is low.
The higher the amps the better. Stay away from saws with 10-11 amps. Try and make sure you get AT THE VERY LEAST 13 amps...15 would even be better. I was a carpenter in a former life, and when it comes to power tools...amps are the key.
These motors should be compared based on output horsepower, not on amps. As a general rule of thumb, an 8 inch table saw needs a minimum of 3/4 HP in a capacitor start motor and 1 HP for induction start. A 10 inch table saw needs a 1 HP capacitor start and 1.5 HP induction start. A 12 inch table saw needs at least a 2 HP capacitor start and 3 HP induction start. These are "minimum" ratings, a larger motor has advantages in terms of cutting faster and less problems with binding and burning wood edges.
My 10 inch craftsman table saw has a 1 HP capacitor motor that has cut thousands of board feet of wood over the last 38 years. If and when I have to replace it, I will go for a 1.5 or 2 HP capacitor motor.
NW Alabama, 46 years, 24 colonies and growing, sideliner, treatment free since 2005, 14 frame square Dadant broodnest