Hi Enrique,
Everyone makes their own choice of course. If the small number who had some issues a while ago puts you off, I'm sorry.
The latest springs last much longer. We replace any that do break ones under the warranty and spares don't cost much, and can be fitted on the job if necessary.
If the product is kept clean, without any lubricant being put in, which actually causes problems, then they don't jam.
We give a 12 month warranty and the price also includes 8m of our orange hose, which is really popular. We also offer a 28 day money back satisfaction guarantee.
Paul