Getting older and thinking of getting more 'cushion' shoes for badminton. In your experience, is Yonex Power Cushion shoes worth it? It cost like $130-$150. Does the cushion last long? I don't want to buy it to find that 4 months later the cushion has gone flat. I've worn Adidas Boost bball shoes before and love it. Is it better/worse compared to Adidas Boost?