Custom
New and different carbon, steel alloys, magnesium alloys, joinery, improved drive systems -for new advanced frame design. I find all interesting and something I wouldn't mind experiencing.
Of course I dig vintage and retro too, like the brand new 'classic' Italian models being reintroduced and made to order.
BTW: I hear 2019 NAHBS has record attendance
https://m.pinkbike.com/news/orth-ame...show-2019.html