I am a huge fan of E6000. I feel the people who have problems are using it wrong.
IThere is a full tutorial about the correct method of using E6000 on my web site (see below). We have been doing this over 10 years including several years of production for shows. Never had a failure.
Web Site http://www.kaiserglass.com
Glass Classes: http://www.Kaiserglass.com/classes.html