Hey there, I have the Michigan maple end grain 3.5 inch thick board. I have not tried a Boardsmith board and i am sure they are incredible. But the MM board has been great. Easy on the edges, just feels great to cut on, huge and heavy so it doesn't move and water never seems to get under it, and while not a work of art it looks very nice in my opinion. I don't know how to better quantify how pleased I am with it other than to recommend it.
It was 92 dollars on amazon. If I had a budget to get a Boardsmith or other custom board I absolutely would and they are likely far better. But for the money, this thing is awesome, and I'd be shocked if I ever needed another board in my life. Or my kids lives after me.
But man oh man does it suck up the oil.