There is nothing/not much/little to choose between A and B

Pro Tip 1/3

Decision Difficulty

Use when choices are so similar it's hard to decide; often for options of equal worth.

With their identical features, there's little to choose between these two smartphones.

Pro Tip 2/3

Nuanced Differences

Implies differences exist but are so subtle they might not influence the decision.

There's not much to choose between the two routes; both get you there on time.

Pro Tip 3/3

Equality Emphasis

Stresses equality in quality or value, not always physical similarity.

Both are top students, so there's little to choose between them for the scholarship.