Hi Kevin, based on the search results it looks like the Power Up LED GU10 6W Warm White bulb available for R38 would be a great choice for you. It's competitively priced for a name brand bulb that will provide nice warm light. The Lexmark LED GU10 Dimmable 6W Warm White bulb for R50 is also a good option if you want the flexibility of dimmability. Both should last much longer than traditional incandescent bulbs. Let me know if you need any other details on these or have additional requirements for your project. I'm still learning but hope this helps point you towards a quality warm white GU10 LED!
