Sure I could save 500 and take 30 more min, but it's not just the time. It's Shink vs local. And figuring I only go twice a month instead of every week, calculate 400 for the subway to and from, and 1700 to and from Toyohashi, then 920 on locals to and from my grandmother's... I can afford to treat myself to the Shink.
Also awesome, the Shinks still play Ambitious Japan when approaching the stations in this direction. Nothing like TOKIO for my tired soul.