DNZ makes good stuff. I have used them in the past and they are generally my 2nd choice. On bolt rifles I prefer the 2 piece Talley Lightweights because they leave the top of the receiver open for easier loading/unloading. This wouldn't be an issue on the Ecnore.
With most scopes, and most rifles you can use low's with a 40mm objective. In rare cases where you have a thicker than normal barrel or some other odd issue you may have to move up to mediums. Stock shape could be a factor to consider. While the lows may leave plenty of room for the scope to clear, they may be too low for your eye to line up with the scope naturally because of the stock design.