I've never owned or fired either and rarely see either one for sale. I believe that they once went out of business but they are making them again? I'm sure that they're both safe to use especially at the price that they are selling for. I'm just guessing that not too many people on this forum have had any experience with them either? You may be the first person that brought them up?
If it were me I'd get the 44 Automag 180-D first if only because in my opinion it's a better looking gun and was made famous by Clint Eastwood in his "Sudden Impact" movie. Whether they're reliable or jam I couldn't tell you. There's plenty of information on YouTube regarding both. 44 automag 180-d 45 Wildey Magnum