Cast Iron Pipe Questions

[Sariah Langinbelik]

Hi, I'm new to Bigger Pockets (my brothers urged me to join).

I recently bought a home with a basement in Utah that has been having draining issues.  We got it professionally snaked and then was told that the main sewer line (Cast Iron) should be totally replaced and they recommended doing an epoxy liner for the transition pipes (near the sidewalk) that connect to the city's main line.  Our house was built in '63 and these pipes have never been replaced.

We've got multiple bids and I'm wondering the following:

1. One company recommended 'reinstating' the cast iron pipes rather than replacing them.  Basically taking a type of special drill and scraping the inside of the cast iron to remove all of the rust/gunk and make the pipes 'like new'.  They said this technique is very popular in Europe.  Has anyone heard of this and is it reliable?  Out of 4 companies only 1 recommended this.

2. Is a fiberglass epoxy liner worth having for our transition pipes? (the pipes are cast iron till the end of the yard and then transition to a different material pipe that connects to the city line)

3. Is there a huge difference in a company installing ABS vs. PVC piping?  

thank you!