Wheel Clamps & Hitch Locks

ClubMember49C002CC96

Having just purchased our new caravan, which we collect next week  I need to pick peoples brains yet again.  I fully understand that the Al-Ko wheel lock is the Bee's Knees  and it cost are something else.  (Also been told its not the easiest to fit)  But
we have been looking at the Fullstop Security brands Nemesis, Excalibur and Saracen (hitch lock)  All come with the Insurance Approved  GOLD mark. Do any of the more experience members have any views either way.