not sure about the boots you bought, but any good, heavy duty boot requires some break-in time before it become comfortable.
also, it really depends on the type of hiking you are doing, how heavy of a pack you're carrying, the terrain you're hiking, and the time of year. minimalist shoes are fine and dandy. i wear them 99% of the time. but if you're hiking for extended periods of time, with a 60lb pack and dealing with cold temperatures and rocks, you need a real boot. something that will provide support and protection. i wouldn't go anywhere without my vasque sundowners.