Really like my Fitbit Ultra, so when I heard about the Aria Scales, I ordered them straight away. Took about 2 months to arrive, but meanwhile reduced in price by £20!
Still quite expensive at around £100, (hope my wife doesn't read this!)
Quality is good, and attractive appearance.
It is very important to use these scales on a hard base, I have used a large ceramic tile. If you use direct on carpet you will get very erratic readings (in common with many other scales) The instructions do cover this. Once you have settled on a position, keep in same place.
From the WiFI point of view, the setup was easy, scales are in a bedroom and it found my router which is downstairs in a room on the side of the house, so a good test. Easily set up my wife as a second user,(you do this via the software on the computer to add a user) because she is much lighter than me recognises her straight away. For users of similar weights it suggests likely initials and you select the correct one. Computer does not even need to be on, as it all links through your router. Mine is latest Virgin one.
Have found the readings to be generally very consistent, did have a period of around 5 days when Body Fat reading lowered quite substantially, then it reverted to normal thereafter. At best this is only an estimate anyway.
Weight readings occasionally record 0.1 of a pound lighter in Fitbit than the reading on the dispay - hardly a major problem! Syncing is very consistent, perhaps only one in 25 fails to sync, but always goes second time. You need to stay on the scales until syncing has confirmed to get best results.
I have certainly not had large fluctuations in weight like some people report, I think some of them were probably not using on a firm base. Generally if I repeat the weighing I get exactly the same result. For consistent results day by day, always weigh yourself at around the same time, and bear in mind any retained body fluids etcetera can cause quite a variation in reading!
In common with other Fitbit products there are no printed instructions. You have to go on line to read them. This has the advantage that it is easier to keep them up to date, but some people will find this irksome.
Love the way it all integrates into your Fitbit account, and also any other apps you may have linked to your Fitbit.
I think perhaps they sould be around £25 cheaper, this may come with further sales, but also will be influenced by similar products (e.g. Withings)