I've had an Eagnas Combo 3800 since 2005. It has had only 1 issue. One of my clamp housings stripped. It cost me about $100 to replace. I had no issues with them. I did my work through e-mail.
I've strung probably about 500 rackets. I string for myself and occasionally teach someone to string so it is not seriously heavy duty stringing.
Average over the hill 4.5...