The keys for the UK in choosing JSF are:
Flies from boats
Generates huge amounts of $$$ for UK economy
Offers unique, highly desirable capabilities like penetration of high threat defenses
Saves money over buying Typhoons
Once ordered, I expect next shoe to drop will be reduction or elimination of UK Typhoon Tranche 3 as hinted by MinDef.
Jacko, stop being such a sore looser. Both UK sovreign thingie & UK spec are guaranteed. In fact, UK gets identical spec aircraft to US.