Yonex ES5 Protech cost about 12,000 Singapore Dollars. On the other hand, Victor / Lining machine cost only about 3,000 Singapore Dollars. If you only doing this for part time, I will suggest you to choose Victor / Lining machine. But if you have a shop, you can go for Yonex ES5 protech because you are doing it for business (not just stringing badminton racket but also stringing tennis racket). In Singapore, the market is very competitive. As long as your stringing job good then they will keep coming for you no matter what machine you are using.