FisherPaykel vs PBGK cpap/autopap

Checking out the options. Narrowing things down.

Anyone know of the two brands, which is quieter, more comfortable, etc..
Whats your exp? Does one tend to have a longer life than the other?T

If, for the sake of money, you have to make trade offs, which would you be willing to go w/out? What is least significant in the scheme of things (being comfort and effectiveness). Keep in mind I'm talking someone doing this on their own w/a prescription and no real back up except a life line to cpap.com and cpaptalk.

cpap vs apap?

cpap w/heated humidifier vs apap?

heated humidifier vs software?

Sorry...I forgot to fill in username...its me...Terry