Updated a small bathroom this morning. Used one of the Tyco NEC approved splice kits. Still prefer the lugs and heat shrink but it's only because I have big hands and was
Amazon.com: Romex Splice Kit 3 Wire
Enter the Nonmetallic-Sheathed Cable Interconnector – IAEI Magazine
Tyco Electronics Romex Splice Kit 3 Wire, 1/Clam CPGI-208169-2 - The Home Depot