Priority based lookup

This seems to work:

Formula:

=CHOOSE(VLOOKUP(C3,$L$3:$M$9,2,0)-VLOOKUP(C8,$L$3:$M$9,2,0)+2,C3,INDEX(C$2:C$11,MATCH(MIN(C11,C6),C$2:C$11,0)-3),C8)

Formula:

=CHOOSE(VLOOKUP(C3,$L$3:$M$9,2,0)-VLOOKUP(C8,$L$3:$M$9,2,0)+2,C6,MIN(C11,C6),C11)

Jacc's formula is neater than this... but it may be delivering the wrong result in the 3rd case...

=IFERROR(IF(INDEX($N$3:$N$8,MATCH(C3,$L$3:$L$8,0))&INDEX($N$3:$N$8,MATCH(C8,$L$3:$L$8,0))="12",C3,C8),INDEX(C$3:C$11,MATCH(MIN(C6,C11),C$3:C$11,0)-3))

and

=INDEX(C$3:C$11,MATCH(C13,C$3:C$11,0)+3)

I couldn't see HPC Case driver in the list so I just added it.

You're welcome.

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