Of the three you listed, Decadent indulgence 3 seems to have the most bang for it's buck. All of them have cumbersome handles, but I think that is the same with most if not all rabbit vibes.
As far as putting all three on a comparison, the Decadent indulgence scores the highest on the material safety scale and has the widest range of functions to offer. It is also the lightest, (1/2 the weight of the other two) and has the largest percentage of usable length (6" insertable of 10" total size)
I can't speak from experience on any of these toys, but based on the comparison charts, I would definitely go with the Decadent Indulgence.
My all-time favorite is still the jelly Osaki aka Eager Beaver. I hate the material but the size and power are perfect for me. I have two Jopen Rabbits and others and they just aren't quite as good of a fit.
It's hard to say. What are your preferences? Do you like large or small? Shaped like a real penis or not? Are pearls something you'd really want? What about remote control, a corded remote or one that's on the vibe itself? Those are some important things to think about first. Personally, I hated my Classic Rabbit Pearl. It stopped working after 3rd use, remote was totally unusable and everything just kinda died out after the 3rd use. It was WAY, WAY too big, etc. It was too much trouble. The other day I got the Clitterific Cup by Doc Johnson. It's not an actual rabbit, but a rabbit style and much cheaper! I freaking love it! We wore that baby out today! Lol (Sorry for the TMI) I prefer it rather than the real rabbits because I can't ever find one small enough and not shaped like a penis. Lol. It's very beautiful too! It's the perfect size and everything about it is just mind blowing. I also have a rabbit style vibe it's the Hummind Bird Pleasure Vibe by Nasstoys I think. I loved it. It's not like a dildo, it's got a rounded ball like thing at the end and a nub for great G-spot stim as well as a hummingbird's beak for the clit stim kinda like rabbit ears. If you're preferences are more like mine, those are a couple you could look into. I'll be writing a review on the clitterific cup soon. But if you really want the actual rabbit, I would honestly go for one with the remote settings on the base. It's much easier.
Anyways, I sure hope you find the perfect one! The wall bangers deluxe always looks good to me, but it's too big and not quite what I like in my toys, but I would think it would be an awesome toy as long as it fits your preferences.