I really don’t need any of them anymore but each has its usefulness.
The stick steadies me when walking over uneven ground and paving, plus drivers stop for me at pedestrian crossings even before I step off the kerb.
The wheely walker is good when I take a train to the city. If the carriage is crowded I can sit on it and I can hang bags of shopping from the handles. It is OK on travelators but not so good on escalators. The walker folds down to fit inside the car boot.
The scooter is good for short trips, doesn’t need a parking space and is fun to ride. However, it bucks like a brumby because the local footpaths were never designed for mobility scooters. It doesn’t pay to speed especially when driving down a path that slopes at right angles to the direction of travel. The scooter can tip over sideways and has done so a couple of times. I know now that going flat out is only for flat, level surfaces.