We are still in quarantine phase but we managed to get access to private badminton court and played two 3 hours sessions yesterday and today. I haven't played singles with 100ZZ but managed to compare it to LDF in doubles games (in both cases I used 4U versions for doubles). What to say? The rackets are totally different so at start I had some troubles using 100ZZ especially with overhead shots and in to some degree with backhand shots but eventually I managed to get timing right. So considering doubles games in my opinion 100zz is superior racket for front court and middle court plays. It is very playable racket and precision on net plays or fast drives is superior to LDF. It is also highly superior on defense. I still preffer LDF for backcourt doubles play since I have feeling that I can generate more power, especially on backhand smash and overhead smash. As mentioned I also had some troubles using 100ZZ on backcourt backhand clears but once I managed to get couple of games under my belt and timing right it performed very good or as good as LDF. 100ZZ is (despite being relatively stiff racked) very easy to use and I like it a lot (actually I love it). I will have more sessions on thursday and friday and hopefully I will get my smash and overhead game on par with LDF. I think LDF is slightly more flexible racket and I have to adjust my strokes to this new racket since the power with 100ZZ is generated more by speed than flex (if this makes sense).