John just wants to buy and fart in this one, too.Wow. a 2017 with 1700 miles and a 2016 with 2400... You really are struggling to find the time to drive these. I tend to think you should sell one just based on that. The market is too good to not cash out one. Keep one to enjoy when you do have the (rare) opportunity to drive it. I almost lean towards you keeping the GTR as it is a bit more family friendly and probably more useable (in theory).
That said, all my unsolicited opinion, so take it for what it's worth.