Pros: Reliable on Black-Powder motors as long as launch system supplies sufficient current. I've used them only with a heavy duty 12 Volt launch controller for single engine ignition. Must be installed touching propellant and tamped in with the included plug or a small piece of rolled paper and/or a toothpick. Burns longer than Quest igniters, with more sparks. Difficult to fire accidentally as they require in excess of 1 Amp current, so can be continuity checked with a small light bulb as found in older launch controllers. Works equally well on Quest motors, but plugs do not fit Quest nozzles, so must be tamped in as above. Cons: Fragile. Prone to shorts unless carefully installed. Must make sure wires do not touch when installing igniter plug. Not so good for clustering due to short, uninsulated leads and high current requirements. I use Quest igniters exclusively for clustering- the leads are long enough to not need a clip whip for most clusters. Summary: Perfectly fine for the motors they come with as long as you're not clustering and you have a good launch controller.

Pros: Reliable on Black-Powder motors as long as launch system supplies sufficient current. I've used them only with a heavy duty 12 Volt launch controller for single engine ignition. Must be installed touching propellant and tamped in with the included plug or a small piece of rolled paper and/or a toothpick. Burns longer than Quest igniters, with more sparks. Difficult to fire accidentally as they require in excess of 1 Amp current, so can be continuity checked with a small light bulb as found in older launch controllers. Works equally well on Quest motors, but plugs do not fit Quest nozzles, so must be tamped in as above. Cons: Fragile. Prone to shorts unless carefully installed. Must make sure wires do not touch when installing igniter plug. Not so good for clustering due to short, uninsulated leads and high current requirements. I use Quest igniters exclusively for clustering- the leads are long enough to not need a clip whip for most clusters. Summary: Perfectly fine for the motors they come with as long as you're not clustering and you have a good launch controller.

As long as you're careful not to manhandle these too much and break the wires apart, they'll usually work fine. I imagine Estes has a warehouse full of these and we'll see them for another decade, but for usability and reliability, the Quest Q2G2 are more flexible and more consistent, plus they have shielded wires which allows them to be used for other purposes, such as dual-deployment altimeters and ejection charges. These are the cheapest, by a good margin, and for use with the motors they come with they're ok, but if you're having to buy additional igniters (probably because some of these broke), you're better off keeping Quest Q2G2's as spare/extra igniters.