You will want both, a chop saw and a table saw for stair treads .... and a router, jigsaw, 1/2" drill, brad gun, finish gun .....:whistling2: clamps, grinder ... you need all the toys for stairs.
I am not familiar with the rigid, that craftsman saw has been around forever.
Did a quick google search on the model number, is same saw we have at the shop, is same saw most woodworkers I know, have in their shop.
I would have same saw myself, but I need it to be portable and carry my saw in my van.
The craftsman is to heavy and is a pain to move from job to job as needed, but if taken care of, craftsman could be the last table saw you ever buy.
The best improvements you can do to a table saw, first is a better fence, they can be expensive, yours comes with a improved fence, good chance will not be able to get as good of fence for the rigid, not sure though.
I am voting for the craftsman :thumbsup: