I can comment about two of the books on the books listed above.

• Simple Science Object Talks. by Heno Head, Jr.
  
  1) was it worth buying - At $5.99 it is a bargin. There are 25 "experiments". Disadvantage: no index of Biblical verses used.
  2) does it give you a talk to give around the science experiement that relates directly to the bible story - yes. But the "stories" referenced are sort of obscure. I guess the experiments relate more to a Bible verse than to a story.
  3) have you used it often - No.
  
  
• Amazing Science Devotions for Children's Ministry. Sheila Halasz (Editor),
  
  1) was it worth buying - yes. There are 41 experiments. Advantage: has an index of scripture referenced and a subject index.
  2) does it give you a talk to give around the science experiement that relates directly to the bible story - Yes.
  3) have you used it often - No.
  
  I can't say that I've used either book "often". Probably because we don't often do a science workshop. Problem with science workshops is that they are hard to write. There is the need to do more than one experiment. (The experiments in these books don't take much time.) It can be hard to find a bunch of experiements that relate to one theme. (I find it hard anyway.)
  
  --Carol