Think I Need My Sensor Cleaned?

Think I need a sensor cleaning? All those little white circles are where I had to touch-up sensor dust. Yes. One at a time. And I believe this image was only at F13. If I had shot stopped down to F22, F29, and F32 which I regularly do for some of my time exposures you'd see alot more than this. Not only that, but those are the "visible" ones in the plain sky. I'm sure there are others buried in the details which I've yet to clean.
I think it's time for a cleaning, but I'm going to wait until it slows down some -- maybe Thanksgiving week before I take the bodies in. I used to do it myself, back in the day when a sensor cleaning was like $90.00 US, and the camera was away at Nikon or whatever for like a month. Now, for $25.00 I have a place in Philadelphia that does it for me while I wait. Can't beat that price. I'm taking both bodies in -- the D700, and the D300 for a good cleaning. Keep in mind both of these cameras have the sensor cleaning vibrating option (turned on to clean automatically at start up) but that only moves around the loose dust, not stuck on crud which is what this must be. In the past, I've tried using what I call the "clean frame" where you takes an image of a clean sensor, as per Nikon's manual, and whenever you have dust you run your images through this clean frame using Nikon's proprietary CaptureNX Software; the software compares the clean sensor image, to the above mess and it's supposed to eliminate, automatically, whatever doesn't belong. It does a great job. Actually way to great-sometimes it obliterates details that DO in fact belong in the image!! So I don't use it.

Best,
J