More stable than a Laser and faster, light weight, so easy to move around and put up in club racks. All the fun of close racing that comes with a nimble single handed dinghy. Same price as a new Laser.
The Aero is billed as the 21st Century Laser, the boats have similar length and beam. Like the Laser the Aero has three rigs 9,7 and 5.
The RS Aero specifications can be found here.