I need to change the locks on our conservatory exterior doors so I am looking for any recommendations of what make to buy & any websites that you have used. I have had a look online and they range from £5 from Screwfix to £30 from a "specialist" website. I would also like to know if its worth buying 5 pin or the 6 pin antidrill type. I don't mind spending a bit more for good quality rather than buy a lock made of chocolate. I still have to contact the company who fitted the conservatory but being Saturday they are not there. Any help would be much appreciated.