I'm late jumping in on this topic, Jayhawk, but I thought I'd let you know about my experience.
I've had a LOT of sinus infections the past year. Last summer I had to stay on antibiotics for more than a month. But I didn't want to keep going on antibiotics, so I finally got a referral to an ENT doctor a month or two ago. I had read up about sinusitis, and I knew that allergies had a lot to do with it, but I didn't think I'd had allergy problems in years (I had no allergy symptoms, such as runny nose, itchy eyes, sneezing, etc.). So I was really surprised when the doctor prescribed allergic meds (I'm taking Allegra-D--the decongestant is really important for me), and my sinus problems cleared right up. As long as I stay on the meds, I have no problem. I also use a neti pot at least once a day. I keep some noniodized salt on the bathroom counter and just mix it with fresh water from the tap. It only takes a couple of minutes and it cleans out all the contaminants. My doctor highly recommends it.
I asked her about a device I saw advertised on the Web, a kind of waterpik device that claims to force water up into your sinuses. She showed me how tiny the openings to the sinuses are (very small) and said that there's no way to force water into them unless they've been dilated. She told me the neti pot is just as good, and it's a lot less expensive.
Good luck. I'm glad you're feeling better!