We subscribe to 1link and find the service very good, no more disputes about invoices and whether or not they were received etc.
Payment is also a lot faster, and no quibbles about the amount, because the amount authorised is the amount payed.
This is our opinion as a garage who averages 2 to 4 lease vehicles a day through 1link to the relevant leasing companies, other peoples findings may not be the same as ours
Hope that helps Andy