I have had this wave for a couple of months now. I chose Garmin's wave just because I also run their pulse watches and use their fitness app. That is, it was easy to sync everything wirelessly into the same app.
On the plus side we find things like: Large plate to stand on, fit my 46s to feet. Clear display that quickly weighs and then reproduces all data while syncing with the app via wifi. Many different measurements, such as weight, BMI, fat percentage, fluid percentage, muscle mass and bone mass.
On the minus side we find, above all, that in recent days it has been decided that I have reached 900 grams in bone mass only. I do not think I have gone from 6kg to 6.9kg in clean skeleton over a day. The same measurement results have now come every day since. I'm currently undergoing a constant weight loss of about 1 kg / week, so probably it's probably something wrong with the formula that the scale uses to calculate my leg mass.
Overall, I like the wave and am pleased with it when I'm a "whole customer" at Garmin. If that's not important to you, I'd probably choose a cheaper wave that does the same thing. Measurement of body fat and the like does not feel completely reliable, just as many others say about similar products. However, I can follow a clear trend in how fat is decreasing while increasing the amount of fluid and muscle mass, and it feels more important than measuring it correctly.
There are cheaper scales that do the same things, but they do not sync with Garmin Connect, so that's all you need to take a stand for. Do you want it to sync directly with Garmin Connect or not?