So basically, this is a huge minefeild, and I'm just going to completely avoid factory wheels altogether and get set of identical hubs built up onto whatever rims fit the bill.
Bitex are cheap enough that this is completely viable. Shop in brighton does them for ~£130 a pair I think, crc 650b i21s are £25 each. Easy sub 200 wheelset
So basically, this is a huge minefeild, and I'm just going to completely avoid factory wheels altogether and get set of identical hubs built up onto whatever rims fit the bill.