No doubt the Dave Brown retracts are good, 'Spring Air' makes an excellent #116 retract unit thats spring down and air up 5/16 or 3/16, 85 degree strut mains and set includes every thing you need and competative with the "other" air up&spring down.. [:-] For this weight class I've had -O- hassels with the Spring Air units and found them over the years to be very reliable and durable;no doubt as the Dave Brown units would be-