I think I should answer this like this

1) Yonex rackets are divided into many versions. The author can pay attention to observe. In our mainland area, the main ones are CH (original from mainland China). jp (Japanese origin), sp (Singapore version) and tw (Taiwan version).

As a Japanese sports brand, Yonex’s jp version is naturally the most expensive, and you can imagine that considering the shipping cost. I think the one that the poster mentioned is more than 1,000, and the jp version is probably more than 300. It should be the CH version. This version is basically completed from production to sales in mainland China, so the cost is naturally lower. There are no big problems with these versions in terms of texture and racket data. I personally think the only difference is the workmanship and paint. If what you seek most is perfection, then choose jp!

2) The Yonex ISO-AP racket itself is entry-level, so it is definitely suitable for beginners. You can rest assured.

3) The two rackets ISO AP and Kawasaki 5980 cannot be said to be better or worse, because the racket categories are different. 5980 is offensive and iso ap is balanced. Which one should I choose? One key lies in the poster. If you are strong and like to kill the ball and attack, you can choose the 5980. If you are not strong and you like to control multiple shots, choose the yy.

Hey, personal opinion, for reference only!