Adjustable beds

Has anyone got an electrical adjustable bed? I’ve seen and tried a few and am sold on them due to lower back and hip pain, but worried as there is only a guarantee on the motor for 1 year which considering the price makes me wary. The stores then try to sell you additional cover for the bed which is supposed to cover it for a further 8 yrs with presumably an Insurance company and we all know the pitfalls of those! The one I’m looking at is Sleepmotion from Dreams - all seem to have very good reviews.