Billhill999 is correct. 5Dimes has the largest selection of props and team totals, however, it will be difficult to get 1K to 2K down at the same line. You can call in and sometimes get 500 or you can wait and bet each time the line moves. There are not many books that will take that level on props particularly, but team totals a few, without a line move, and those books don't have a lot of selections.
