ClarksMen's Bushacre 2 Chukka Boot, Dark Brown, 9 Wide/42 EU Wide

Do these run a full size too large, or 1/2 size too large? Thanks.

Do these fit true to size?

I'm going to buy these for this fall/winter. how is the sizing? I normally where a 12 in most everything. Some say they run big?

The size we can choose is different from size chart, which is correct? 41 m eu equals 8 d us or 7.5 d us?