Depends on what you consider "economical". If you want a single-stage pull, the JP kits are more work than the newer drop-ins but they work great and save a little money ($50-60). I think they can be had for around $130 for the adjustable trigger and lighter springs. They come with good written directions as well as a very good CD with video directions for install. You can lighten the stock hammer for use with the JP trigger and it works pretty well, saving the need to purchase the JP hammer. I've installed two and they both easily came in within a few ounces of 3lbs, crisp, clean, and consistent, and have been great. I've also been around a good many others, as they were THE trigger to have for several years among USPSA/IPSC three-gun shooters. They're still popular, but I think the drop-ins have have gained popularity for the ease of install and maybe the ability to carry identically set up spares.