What would be best...

https://www.ebay.co.uk/itm/new-10pcs...oAAOSwA3dYYyfL

or

https://www.ebay.co.uk/itm/New-C3-4-...EAAOSwTM5Y5YC-

Obviously i might have to shorten the latter one as you cant fit a 100mm shank into an R8 collet :)

The main reason for asking is that I think the first one is too short at 35mm shank???