Went for the 40L advanced myself. Cools between 10 and -22. It's very big though and won't fit standing in my Passat boot Got if for 216€ with AXA discount. Would have loved the 75L, 600€ originally would have been 380€. Halfords advanced are normally very good quality.
Been on a few days so not sure how long more. click and collect and pay in store.
10% voucher from Public Group Schemes
Worked today in the Waterford Halfords