I've their Legacy IV boots in rough out leather.
Their last is quite roomy, I have to wear size EU40 in this boots whereas normally I wear EU41 (or US7.5 in Alden Barrie or True Balance last).
The boots are very comfortable to wear, no breaking in period required.
Very solid and sturdy construction.
Megatron1505 summed it nicely though I've no experience with Whites boots, I'd Alden Indy before and my Legacy is standing at least on the same...