not sure if I am too late but MDS and eurobat are good web sites.
I bought my car battery from the battery shop (yuasa @ a very good price)
and my Honda yuasa battery from BBLbatteries which gave me a good price and 2 years warranty (normally 6 months)
I would stay away from lithium. I certainly did!
Although I have used yuasa motobat is a good alternative specially looking at the Ah and CCA pleaides quoted