Ok, so since these are all SO different, what exactly do you want? As far as rabbits go the Mood Passionate is AWESOME. I have four rabbit vibes and I liked this one 2nd best (I am a sucker for my Bella).
Pocket rockets are iffy for me. Not sure how I feel about them because they doo exactly what a vibrator (regular) does, but they aren't a versatile.
Onye is a power house bullet. If you like power, she's got it to give to you. If you're not so into power, this won't be the greatest choice.
I would look around and get a feel for what you like. Take into consideration size, color, noise and vibration levels. You can really narrow your search with these factors.