No worries. The LS50s are great so, whichever amp you decide on, will provide a great listening experience.

It should drive them just fine. I don't worry about wattage too much when I'm discussing with customers. I'll demo a 100W amp vs the AXA35 and, generally, the Cambridge will give a much better sound. I sold some Kef R11 Metas yesterday which were powered by a Cambridge EVO150 and they match sonically very well.

Cambridge Audio pairs nicely with Kef. I'm in Canada so am not sure the price in Euros but the AXA35 is a good little amp. I work in home audio so have the AXA35 hooked up to a CXNV2 which sound good through the LS50Metas.