In April of 2015 Gear-Report.com released the results of their testing of Anderson lowers. The full review can be found here. Here is a quote which shows you can spend more but not get any better quality than Anderson:
“To me, what makes the Anderson AM-15 special is exactly what some people don’t like about them… the PRICE! It isn’t hard to find an AM-15 for less than $75, and often they can be had on sale for less. I have seen them for as low as $39.95. Here at Gear Report we are all about the value that any product we review delivers and we are VERY pleased with the value presented by Anderson Manufacturing with these well made AR15 lower receivers.”
Read the full review and see the video review here.