Yeah, concavity isn’t really the right word, it seems to have become more or less a shorthand for “my feet feel like they’re on the pins not on the body” and that’s about all sorts of things, pin placement and length, etc etc. So yeah a vault is concave and a horizon is flat but they both feel about the same because in both cases the pins around the edge have enough pressure on them to bite. Maybe a really good shape allows for the same grip and feel with less aggressive pins? But I’ve never found that goldilocks pedal.
I like the look of these tbh. They look less distinct than the old ones but that’s probably just convergent evolution, this is a shape that works, the F20 looked basically like they’d stuck extra bits in the middle because they were worried it wasn’t strong enough.
I know people like bolt-through pins but grub screws/open headed bolts have more grip than solid pins- seems almost like a throwback to the very first F20? That was a lesson they were pretty slow to learn last time, there was that whole fiasco where journalists were getting sent pins that the public couldn’t get, because the gen 1 pins basically didn’t grip.
All that said… These are bloody good and about 1/8th as expensive. though they have gone up £2 since I got mine.
https://www.aliexpress.com/item/1005003156561516.html?spm=a2g0o.productlist.main.1.63552934bNkO4n&algo_pvid=d326fbc9-31f4-455f-8fcd-0287bfbe2af2&algo_exp_id=d326fbc9-31f4-455f-8fcd-0287bfbe2af2-0&pdp_ext_f=%7B%22sku_id%22%3A%2212000031140233734%22%7D&pdp_npi=2%40dis%21GBP%2135.79%2117.54%21%21%21%21%21%402100b78b16733953638753337d06fd%2112000031140233734%21sea&curPageLogUid=i8pCZxo8Qgm3