You know, I have the Boris filters and I have yet to use the stabilizer but it probably rocks, as do all those BCC filters. Funny, as much as I like them I hate most other Boris products.
But to another point made here, Commotion Pro has one of the most bitchin’ trackers I have ever used, so it might be a bargain on eBay or somewhere, but AE has caught up with it it would seem, but one cool thing about Commotion is you can export the tracking data and use it in AE, which is really cool.
But iStabilize is probably all you need.