Fix or replace slate roofing

[Kevin Greene]

What is BP's opinion slate roofing? I know that it can last much longer than other roofing types if properly maintained. The reason I'm asking is that I'm looking at a house with slate. I have the choice of restoring the original roof, or going with a new asphalt roof.  Other homes in the neighborhood of similar age have both types. I like the idea of restoring the original roof, but it could be cost prohibitive. I also wonder if the average buyer might be more comfortable with a shiny new asphalt roof? I know I need to get a roofer to take a look before any final decision but I wanted to get the wisdom of BP as well. The pic is of the actual roof.