I am seeing a trend in all these newbie journey in cpap land (mine included). Most start off with a FFM thinking they are mouth breathers. Within a few months, after battling leaks and fixing one problem after another, we realize that less moving parts and less contact area means less leaks and less problems. Then we get to nasal pillows. Then start the war b/w P10, Aloha and Nuance pro. Finally the P10 wins most of these because it has fewer moving parts and adjustments than the others.
In general, if your pressure need is modest (< 15cm), Nasal pillows w/ or w/o chinstrap is an easier battle than FFM and TFFMs.
RDI always below 1. But sleep much much better at straight pressure.
Started on F10, Tried Quattro Air successfully. Finally settled on P10.