#ottbike with trailer folks: my S-and-BIL are looking for a new trailer now that they have a new baby, something that can fit both kids. Extra requirements include being easy to transform into a double stroller (so they can use it now/not get a double stroller) & head support.

Suggestions? BIL is eyeing Burley elite X and Hamax Outback but isn't sure if it's really in their price range. Has also seen a Chariot CX2 on Kijiji but says there's only head support on one side so is worried it won't work. Maybe with a pillow? Suggestions welcome.

Bonus for anyone selling a double trailer to stroller conversion/looking for a new home for one that is gently loved!