Whilst on this topic of GU10's, not that I have any recessed 12v halogen lights anymore, the problem of lack of economically priced and robust 12v LED direct replacements seems to have been averted by the availability of 240v GU10 replacement plugs which allow a relatively easy way to swap between 12v and 240v. I have seen these on Amazon.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).