I do not know much about these ones but all of my Bulbophyllums are mounted. Some of mine prefer to dry between watering and some prefer the roots to remain damp. All seem to like air to the roots. Many of them really like to ramble, too. Mounting is a good way to grow them for that reason. Good luck with both of your new orchids.
I also took advantage of the sale and spent a little more money but, for what I spent, I got really great, healthy orchids that would have cost much more otherwise.
I bought the Dracula papillosa, Bulbophyllum blumei, Bulbophyllum lasiochlllum dark form, Bulbophyllum laxiflorum and Encyclia chimborazoensis. The Encyclia is going to be a gift for someone.