A great money and time saver when travelling from Toronto-Pearson to downtown compared to taking a cab. This clean, fast and reliably on time train leaves from T1 every 15 min, and only costs $12 CAD, while a cab goes for about $55.
The train takes you right to Union Station, the heart of the Financial/Entertainment district next to the CN tower and Bluejays Stadium in exactly 25 min with two shorts stops on the way. Rush hour traffic in a cab will easily take you twice as long.
Quiet, clean, with plenty of space on board to stow luggage, and the ticket machines even take USD! Gotta love Canada.