Jumped from gen 2 to gen 4 and i absolutely love it. I'm a bit disappointed in Toyota's after-sales and the naff customer portal online, but the car itself exceeded my expectations and is a joy to drive. I don't fixate on mpgs and will scream away from the lights sometimes, leaving all others on my wake, but how great is it that you can do that in a hybrid electric vehicle? I'm not sure what gadgets or tech the car is missing but I splurged on the top package and seems to have everything. If I had one complaint it is that I can't flip between mph and km/h when I move between the UK and the continent. Oh, and not being able to turn the headlights completely off while leaving the engine on (for drive-in movies) but otherwise it ticks every box for me.