Many years ago one of my first jobs as a teenager was working in a hardware store. Thw standing rule at the time from the owner was we would inform customers buying ladders never to exceed 75% of the weight rating of any ladder. I have stuck with that advice for 30 years now and never had a ladder collapse on me. I also have a Telesteps Model 1205, that is a year old and the big Little Giant. My Telesteps is for indoor use only and then only for getting into attic areas. To get to the roof I use the Little Giant exclusively, the only time it ever see's the interior of the home is if it is an older home with the higher ceilings. My wife, refuses to climb the Telesteps, she is afraid of the sag. Me too, but it sure is handy and easy to carry inside a house. I have seen these telescopic ladders fail and it isn't a pretty sight. Before coming to this business I was in law enforcement. These types of ladders have been in use in the law enforcement community tactical teams for years, although they are much heavier duty. But they do fail. The more moving parts there are on anything, the greater risk of failure. Best advice is don't abuse them first of all, maintain a regular maintenance and inspection schedule of the ladder, and don't exceed that 75% weight rule. Especially important also is setting the ladder up with the greatest angle of attack as possible. The lower the angle you set these things to, the lower weight rating they have.