you are 200cm? As in 6 foot 6? unless you are a skeleton, 189 is absolutely the right size if not too small for you. There are a lot more variables to ski size than just length- including ability level, rocker profile, mount point, and skier weight/strength. For example, I have a 5'7 friend who skies 186 on3p kartels just fine, since there is a ton of tip and tail rocker making the effective edge shorter plus hes a strong enough skier to handle them- even though in theory 186 is way too big for him.
Vishnus would fall into this category- even the keys, which are stiffer and more traditional of a park ski, still are super light and have a decent amount of rocker- plus ive heard that they get softer the more you ski them. If anything, assuming you are 200cm tall, i would be more worried that the 189 keys would be too small for you and you would overpower them too easily..
zraI am around 200cm without shoes on, and I have Vishnu 189 keys on the way. I would have ordered 184s but for some reason he only offered the keys in 180 or 189. I actually personally asked him and he said he would recommend those over the 180s for my height.
I’m really exited for them to come, but been having a bit of buyers remorse because im worried they will be way to long. Last year I had heavy 193s, so it will be a huge step up regardless, just worried I could have done better.