Conversational IVR Bot Preference

In reviewing the product documentation (5.3:Scenario-builder-reference-guide/Exercises/ConversationalIVRScenario - Bright Pattern Documentation) we see that there is an option to use either Watson or Lex for the integration account. Is there a preference for one over the other from a BP perspective?

Hello, we are equally as capable with both options, it really comes down to preference and pricing