I've decided to test Roomba 980 vs 960 to let everybody know whether it is worth to pay extra $200 for the model 980 or Roomba 960's features are enough for everyday use.
Roomba 960 vs Roomba 980 is 1670 pa versus X pa — the manufacturer somehow failed to disclose in the specs. However, both devices demonstrate rather strong suction. If to compare the dustbin capacity, Roomba 960 container’s volume is 150 ml more than Roomba 980’s one. Nevertheless, the difference between them is not very significant.
After the test IRobot Roomba 960 vs 980 it became clear that the model 980 is more convenient for the large houses, especially with the open-floor or non-standard planning — it's cleaning area is 1900 sq. ft. If your apartments are of moderate size Roomba 960’s 1500 sq. ft are quite enough.
The result of the noise test IRobot 980 vs 960 showed that both devices work quite on the hard flooring but become a little bit noisy on the mats and carpets.
The Roomba 980 does pretty well with the low-pile and mid-pile coverings. The Roomba 960 cleans up perfect as well; however, it is difficult for it to handle sugar. It manages to pick up merely 50% of debris for the high-pile carpets. The Roomba 980 can to clean high-pile coverings as well, though it leaves some pet hair.