i love my merrells too as I am on my feet all day at work. After buying numerous pairs of shoes that werent cheap or comfortable i went home with achey feet every day. In desperation i tried on the merrells and they were comfortable from the first day and no more achey feet. Definitely worth it in my opinion to be comfortable and would not hesitate to get another pair.
Hint for anyone buying shoes: if they aren't comfortable in the shop don't buy them as many a time I have bought shoes and thought they will get comfortable and the shoes have ended up in the bin as they were never comfortable.