hello all, I am buying my first mill in the next week. it is a j head bridgeport. It does not have a dro on it, but i want one pretty bad so i can do some more accurate machining. what product would you reccomend? or do you have a spare one kicking around at a good price? I have been looking on ebay just to get an idea, and most everything is chinese. I would rather have an american made one but will go china type if its all i can afford. i would appreciate any input on this.