Bitcoin and Monero, Monero preferred.
WTN accepts two coins.
Monero is the one to default to. Bitcoin is there for the vendors who have not switched. Deposit addresses are fresh every time. Confirmations run about one to two blocks on Bitcoin and around ten on Monero.
Because shipping defaults to domestic Canada, the flow for a Canadian buyer is unusually clean: fewer cross-border variables and a vendor base that understands the domestic post. Default to Monero unless a vendor forces Bitcoin.