I'm the same way. The actual rabbit vibes always are finicky for me (beads stop working, it begins changing speeds all on its own or heck, it stops working quickly all together!) That has been my experience with every real rabbit toy I've owned. So I started going for dual-action toys that were designed like the rabbit -- with a clitoral stimulator and an insertable portion, but not an actual rabbit with beads and all that stuff. My first really fabulous dual action toy was Flutter by Evolved, that was over a year ago and I still love it! I also enjoy Sugar, also from Evolved, but it's short so I usually use Flutter since I like a lot of length.
Here's what Flutter looks like
No finicky pearls/beads or any finicky controls. It's been one of the best toys I've owned! PS. Flutter is actually on sale right now! It is a toy I'd recommend if you like dual action, aren't looking for a lot of fancy spinning bead stuff or a realistic head. Also, I love that the clitoral attachment is a large butterfly, because it means it's way more likely to reach more clitoris' than the typical bunny ears.
I love Evolved's vibrations too! I've yet to be let down by any of their toys except two really, but Flutter has some of the best vibrations out of all the toys I own.
I have great luck with that type. I finally learned to avoid the real rabbit vibes all together.
Also, another dual action vibe I've had good luck with was Doc Johnson's Cliterrific Cup. It has a big clitoral attachment, so it's more likely to reach more people's clitoris' too, but the shaft is pretty narrow, so you'd have to be down with that, which I do enjoy anyway. It also rotates! I have had it for not yet two years, but close and still like it! Here's what it looks like:
PS. It's on sale right now too!
Anyways, I sure hope you find one that really does the trick for ya! Maybe one of these I mentioned will be of use to you.