I will say this about some of the 'cheap' steering shafts I've bought in the past: The alignment of the ends aren't always welded on 'straight' like they should be. If you can imagine a shaft or a couple shafts... if the ends are not welded on 'straight' then the shop need to compensate during the alignment by moving the steering tie rods one way or the other to make the steering wheel 'true' and the rack 'true'. There are sensor which require it. Plus ..the 'tightest' spot for the steering is 'on-center' so the further off-center the alignment is (the rack sticks out further one way or the other to compensate), the greater the chances of steering play may occur as you are driving straight down the road. I may not be explaining it very well but hopefully you get what I'm saying.
So.. buying one from ebay is a bit risky. You might get one welded 'true' maybe it'll be a little off. Maybe it'll be off more than a little! If it's just a little that's ok, that can be compensated for. If it's more than a little, that's not what you want. One from Mopar I would expect to be 'on the money' true. If a Mopar steering shaft is not too pricey, that would be your safest bet. IDK about Borgeson.... personally. I would "hope" they are welded True...for their price.