Chariot Cougar 1 w/ bike attachment. Solid 5-point harness that's proven to hold a kid suspended upside-down (ask L3 someday). Asking $250.
Chariot Cheetah 2 w/ jogging attachment. Same 5-point harnesses but despite my best efforts, this thing is too stable to flip over. But super-well balanced & speedy - the only stroller that will lower your running PR..downhill...(wrist strap highly, HIGHLY recommended unless you want to test those 5-point harnesses & solid tubular construction again). Asking $450.
Also selling the ski attachments for the Chariot system. 'Tis the season coming soon! Asking $100.