To be fair its not integrated on Typhoon...
I'd prefer that we ordered SpearGlide and a 'SpearSimple' version from MBDA, keep leveraging that investment in Spear, expand the product lineup. But apart from those parochial views... I personally think there is a strong case for ordering JDAM and SDB1 for the UK's F-35. No integration costs, and a couple of cheaper munitions than PWIV or Spear, including a heavier munition than PWIV for internal carriage (in the case of the GBU-32). SDB1 isn't integrated on Typhoon, but Laser JDAM (NOT GPS) will be integrated by the German's from 2021-24. It does appear to be cheaper than Paveway (and less capable in terms of range)...but I'm not sure if its cheap enough to justify the extra effort. The German's are going down that route as Diehl has a licensing arrangement and they have a stockpile of 1,500 bombs bought for Tornado.