The 802 doesn't suffer from motion blur, the one you looked at probably had the "intelligent frame creation" set to Max, which causes some blur. Turn that down to minimum and you won't see any. The 802 was rated as the best LED tv of 2015 whilst the new panasonics are drastically expensive for marginal improvement. The settings just need tweeking as they do with all tv's.
Edit.
I've just remembered that Currys sell something called a Picture Perfecf - it's a calibration tool that will help calibrate your specific tv based on the environment it's in. Every tv is set to shop mode when it comes out the factory which is not suitable for home environment. The picture perfect makes a huuuuuge difference.