The Royal Yeomanry has, what appears to be, a plated metal badge. Its not the same quality as the original brass badges of the County Yeomanry Squadrons that make up the Regiment.... but is better than the AA badges.
The Royal Mercian Yeomanry has and enamled badge that looks more like a pin badge..... but better than the AA.
The best Yeomanry badges I have seen are the Queens Own Yeomanry (running fox) ..... and my favourite is the A sqn (Dorset Yeomanry) RWxY..... this is a well designed badge. This badge is also an enamled badge.