I dont know why you hate stopmotion Pro?, it does the job ok. If you want something close to DragonFrame its gonna have to be DragonFrame, nothing else comes close. It sounds like you already have tried numerous other applications but to be honest you could try every other single stop motion program under the sun but if you want DF then get DF. It is indeed pricey so I can understand your reluctance to purchase but its pricey because it is well developed and used by major studios and all that functionality is available to you regardless of whether your using it for a 10 second clip or a feature length film. Hence why you will struggle to find an identical piece of software for cheaper.
I use Stop Motion Pro 8. Here's the website. You can download the trial to see if you like it. If you want to buy it, there are several different editions, depending on what you need it for. There are comparison charts on the site.
If you do decide to buy it, you could help out our mate Marc Spess and get it through his site (I don't think it is any more expensive - mine was actually cheaper) Animate Clay.
Edit - Oh you don;t like SMP. I didnt see that bit. Typing on the fly.
You rejected Monkeyjam because it doesn't support onionskinning. Is that really something you need? Most of us never use it, except maybe if we bump the animation table or accidentally move something and need to get it back where it was.
Ok, well that's understandable.
I'm not sure how it works with SMP - since you need to have Windows running in Bootcamp, maybe it uses the .exe file? Seems like that would work anyway.
My very limited use of Dragonframe was an incredibly satisfying experience. Very stable, very intuitive, and all the motion capture and lighting control possibilities make it a no brainer. Rock solid app. iStopmotion is pretty damn good for the price, though.