I’m actually contemplating exchanging all our halogen spotlights (as they’re no longer being sold) to IKEA Trådfri.
My rationale for it is that I want to be able to dim them, but exchanging halogens for LEDs would mean the transformer wouldn’t see enough of a load to dim properly. By exchanging everything for IKEA bulbs I save on changing the transformer since the dimming circuit is in each bulb.
Beware, the Tradfri spots are not as bright as regular bulbs by far. Try out one first before committing on a couple hundred dollars.
And if you're hunting for relays and other actuators... the compatibility between IKEA Tradfri products is excellent, but your mileage will vary when going with other Zigbee products.
I like and have bought into the IKEA system, but I have had a lot of trouble with their gu10 lights.
Some sets of three occasionally go into party mode and start flashing in a sequence. They reset themselves every month or so. I'm tall and my ceilings are not so it's quick for me to pair them again. It would be super annoying if they were too high to reach. Setting the white spectrum fails using the 5 button controller. Often one or two usually fail to set correctly resulting in a weird mix. I simply don't bother anymore. They work nicely with the app, when still paired.
I haven't had any problems with the e27's in the same rooms.
'Dumb' rf motion detector triggered under-counter lighting in the kitchen has been way better bang for buck. It just works. No smart home required.
My rationale for it is that I want to be able to dim them, but exchanging halogens for LEDs would mean the transformer wouldn’t see enough of a load to dim properly. By exchanging everything for IKEA bulbs I save on changing the transformer since the dimming circuit is in each bulb.