I think Fisher & paykel sleep style 254 auto, resmed S8 autoset and resmed S9 autoset are good Apap machine. My mother use resmed S8 autoset machine and she told me it is good and easy to use.

I had Asthma before 2 years and I had a same problem as you told. My consultant prescribed me to take flunisolide inhaler and ipratropium. After 3 month I totally recovered from asthma.