I bought the most recent ST water sensor and it works as expected. I also have 2 of the older models and they have worked well over several basement leaks. In fact I kind of like ST's product line - I have a bunch of the single buttons and they too work great. I use them for sconces and desk lighting etc.
My biggest issue is that all the really cool stuff seems to be battery operated which can be a pain the more devices you get.
For motion I went with the Aeotec Multisensor 6 because they can be powered via usb. I use them for activating closet , basement and mudroom lights. They are not as fast as my old ST zigbee ones but it's been worth the convenience so far.
Have been using @bptworld's device watchdog for battery related reporting...
