I've got personal experience with both AmigaFrance and Anthony in NZ.
AmigaFrance I bought some Agni from. Okay service, but some people have been complaining lately.
Anthony is frist class. No hassle and no negative reviews. What ever is wrong with your motherboard, he will find it out. And if it's CIAs, I'm sure he will socket them for you and replace them. Atleast I know he has to working CIAs as I left a dead A4000k mobo with him for parts.
I cannot stress enough the quality of his work, and how competent and reliable he is.