McIntosh for Cornwall 4

I am planning to get ma5300 for my Cornwall 4 but I am seeing some comments saying that ma5300 is not worth to buy because it does not have the auto transformer that give you McIntosh house sound. I feel ma5300 will give enough power to Cornwall but if ma5300 is just another AB Class amp, I might go with mac7200. Anyway, Which McIntosh should I get for Cornwall 4? Ma5300, mac7200, ma252 or ma352? (Not really a fan of tube.)