I use Bob Allens and they are great. I compare them with Randolph Rangers which cost almost twice as much.
http://www.midwayusa.com/viewproduct/?productnumber=480587&utm_source=bizrate&utm_medium=cpc&utm_campaign=624#productTabReviews
http://www.midwayusa.com/viewproduct/?productnumber=480587&utm_source=bizrate&utm_medium=cpc&utm_campaign=624#productTabReviews