How to Decide Where to File — and When to Object to the Chosen Venue

Taking in the perspectives of the debtor and secured lenders, including the appropriateness to decline to support a filing in a jurisdiction that one believes is “unfavorable” in terms of permitted financing terms and covenants, how does a practitioner decide where to file? What goes into the decision? Why are the Sixth Circuit courts not as popular for selection? When should a venue be challenged?