Am confused as to what you mean here. There are plenty of positive reports from owners of all manner of systems on here, yourself a particularly strong one for hub motors. Equally there are critics of all manner of systems from those who have had bad experiences with their setup. What is your personal experience with a tsdz? They are not perfect by any means but what is? If there was one perfect system, such a myriad with their differing characteristics would not exist to choose from :/
I installed a 250w TSDZ a few years ago for a friend. It felt very weak. It reminded me of the old 24v Panasonic crank drives. as it happened, I had one on order at the time for myself. I still have it, and after my experience, I've never felt motivated to fit it to anything.
I don't prefer hub-motors as such. Each system has advantages and disadvantages in different situations. With any motor, the system that drives it is mainly what sets it's characteristics. I have to admit that, until now, I've never found a better bike and motor system that I have now for my type of riding. I have enough cash to buy anything I want. If I could find a better bike, I'd buy it. I have two crank drive bikes and about 7 other hub-motor bikes, but I haven't used any of the others for ages.
One of the problems of positive reports is that some of the reporters have very little experience of alternatives on which to place their judgement. I try to encourage people to make long-term reports after 1000s of miles, but we get very few truly objective ones. I even have first hand knowledge of forum members that have boasted how reliable their bikes have been, conveniently forgetting about what I'd call major problems that they had because the dealer fixed it under warranty. It's like people are embarrassed about the problems their bikes have as if it reflects on their judgement. I don't mind that, but I think it's very wrong to mislead people.
I have nothing to gain by recommending anything. I'm not tied to any trade. My only objective is to help people make the best choice for what they need. Sure I have biases. I'm biased for the products that I found to be good and against those that I found to be not so good.
You're right. There's no perfect system, and I've never ridden any electric bike that I wouldn't want to own if it were the only one in the world.Most of the differences are flysh!t. It's only when people have special circumstances and need special characteristics that we need to be more discerning. I'm sure you've seen it: A guy comes on and says he's got dodgy legs and can hardly pedal, so he needs an electric bike, then three or four people can't wait to tell him how great their torque sensor Bosch/Shimano/Yamaha bikes are.
Look at the guy a couple of days ago. He had a go on a Bosch, the only bike he'd ridden, liked it, couldn't afford it, so wanted a kit with a torque sensor, hoping that it would be like a Bosch. Do you think he would have been happy? What if his friend had Woosh Camino and he had a go on it? Would he have still come back with a smile on his face?