Reliable Zigbee Bulbs Recommendation - UK Based

Hi all, I’ve been using all Osram smart+ bulbs with my hubitat and for the most part work fine but every now and then 1 or 2 of them drop off the network which is a pain as their repairing process is a bit of a pita. I have a fair few mains powered repeaters but still get the issue. I want to replace them with something more reliable , I need E27’S and GU10 spots. Can anyone recommend me any zigbee bulbs which work reliably with hubitat , Im uk based. Many thanks