I wish it was that easy. Flonase did nothing for me other than cause my nose to bleed. Azelastine helped some though and that makes sense for me, my congestion is likely caused by dust mite allergy.
Affrin is amazing for what it is. A few weeks ago I had a sinus headache so bad I threw up. Affrin cleared it up in 30 seconds, and I was able to maintain it without affrin after that.