Good question Jim...
I think Kendrick might be best cost vs reward. Tailion and a few more from the Pirates.
I think Gray from the Reds might cost too much. Not interested in Gray from Colorado.
I might try targeting a few younger just feet wet or near MLB ready the next tier down in orgs like Miami, KC, Cleveland, SD, Pirates.. I think Miami and KC have some surplus I like.. In other words, instead of using an LGR jr to get one SP, package him and get two or three lesser guys who are near MLB ready or have dipped their toes.