When I said you are about 3-cm below your therapy pressure, I meant that based on your median and 95% pressure during use, your minimum pressure setting is 3-cm too low. By using a higher pressure, you will have fewer obstructive events, and less pressure fluctuation. The Philips Auto CPAP in particular is slow to anticipate a pending obstructive event, and it is important to have the minimum pressure at an effective level. For you, that means changing the minimum from 6.0 to 8.0 or 9.0.
No CPAP can "fix" centrals. The Philips detects the type of apnea by using a pressure pulse of 1-cm during a pause in breathing, and analyzing to pressure response to determine if the apnea is obstructive or an open-airway (central). Resmed uses what is called "Forced Oscillation Technique" (FOT) which his a higher frequency (4 Hz), pressure pulse in a similar way. Both of these machines detect the type of apnea and report it as obstructive apnea (OA), clear airway or central apnea (CA), Unknown Apnea (UA), Hypopnea (H).
For individuals using ASV therapy, the way central apnea is addressed is that the machine can rapidly increase increase pressure support when it detects shallow breathing or no breathing. Like artificial respiration, this pressure can push a measred volume of ir into the lungs and maintain respiration, even when that individual makes no spontaneous inspiratory effort. In other words the ASV machine can replace all the respiratory effort to cause respiration. CPAP will simply keep providing its set pressure and no respiration occurs if the patient does not breathe.
A 5-year warranty has some value, and some people may want therapy motoring, however most of us feel we can do better with self-monitoring. It's a nice service that comes with the cost of that machine. You need to compare that cost and what you're getting against the lower prices available elsewhere. for example, you can buy a brand new Resmed Airsense 10 Autoset from
Supplier #2 for $569 USD plus about $100 shipping to AU. The warranty is 3-years and our Australian members have had very good service when needed. So whatever works best for you.