Dana by Strange or Moser?

I'm ready to order a new Dana style rear end for my '69 Cuda. Does anyone here have any experience of buying one from either of these two companies? (I haven't found any other manufacturers)

I'm concerned about product quality, cost and customer service. (I called both companies once a while back; wasn't really prepared to buy at that time but they didn't know; I remember getting an "attitude" from one of the sales guys, but don't remember which company. I sure hate giving a couple of grand to a company whose employees have an attitude.)

I appreciate your input...