+1 for APC if you are looking for a quality product. I have used intex UPS before that and I know how unreliable that was. APC never let me down.
Also, APC comes with surge protection. Not sure if cheap UPSes provide that.
Also, few models have LAN cable port, to protect your computer from electric storm. If you are interested, you may buy that feature too. It is well within your budget.