Mother care is dire. My 2 would destroy mother care clothes after a few wears.
I buy petit bateau (pants, undershirts, pyjamas,trousers, track suits), Polern O. Pyret (outerwear, t shirts), Ralph Lauren (polo shirts, button down shirts, blazers, jumpers), Hackett (rugby shirts, polo shirts), Gap (shorts, socks, track suits), Joules(t shirts), brora (jumpers), and Lego (long sleeved t shirts).
I buy for the eldest boy, which gets handed down to the younger boy, then their boy cousins. Because of this, I spend the bit extra to get quality.