I have bought my computer like about 7 years ago and along with that i bought out some accesories like speakers etc.
Among them one thing worth mentioning is MY ups .It has been with me for more than 7 years and it never gave a problem to me.
I let it stay on all the time and it keeps on charging. It evenly regulates the power supply to my computer pheripherals so it even acts out like a regulator.I used to use it only for the cpu and moniter but lately i m using it for speakers and other accesories and it is still going on.
It was given to me with a promise that it would supply 30 minutes of uninterrupted supply and it stays with its name.It gave me th30 minutes for 2 years and it is giving me about 24 minutes which is good one when we use it for 7 years.
It had even taken vigourous punishments of the voltage fluctuations .It has helped me out in serious times when i needed to do my college assignments and my father in his office assignments .
If you are looking out for a ups its worth buying.