Id personally call the kit very acceptable and worth the expense. If all your looking for is a pull weight reduction then it will get you there. Pair it with some judicious polishing, and they trigger can be made quite nice.
Ive bought some of there other stuff, and generally thats my feeling on what they sell. iIts not "great" but its good, and a good price. Add your own elbow grease and your really getting somewhere.....course with a decent small spring kit and some shims and screws, you can usually put together a similar "kit" for about 1/3-1/2 the cost.