I may be wrong but I think any accident involving rail cars poses less of a problem than one involving a pipeline breach. Rail cars hold a finite amount of oil; a pipeline breach will keep on gushing until the flow is either switched off or the pipe mended. Not that I'm an expert on either means of transportation.
Anyway, I'd prefer a pipeline that goes east, to either an eastern refinery (keeps jobs and revenue in Canada) or to an eastern port for export. Odd how they're only considering that option now, with the potential that both the Northern Gateway and Keystone pipelines won't get built. Right from the start, I thought a route to the east made sense; a "no-brainer" as a certain leader likes to say.