CPAPtalk.com

Respironics is the company, Remstar is the name of the product line, our site here CPAP.COM, has the best prices, and fast turnaround, everything can be ordered from them. I believe the Remstar APAP is automatic on altitude adjust. Good choice!

Good choice also
here are some good reviews on the RemStar auto with cflex
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viewArticle/Respironics-Remstar-Auto-CP ... d-Gal.html

viewArticle/Respironics-Remstar-Auto-CP ... -Muck.html

At least thats what it may seem like people are saying. I like my Remstar.