I'd go with the non-rabbit, myself. I hear rabbits can be great fun, but I've also heard that getting the right size is tricky for some people. I've never used a rabbit myself, though, so perhaps I'm not the best person to be giving advice on the subject.
Although I am not a fan of the sex in the shower toy, I would certainly choose that over a rabbet. The style of rabbits are such a gamble plus jelly is not a body safe material. It will degrade very quickly and needs to be covered with a condom. For nearly fifty dollars, you could purchase any of these toys, all made of body safe material. Good luck with your sex toys search!
The material on the normal vibrator is much safer than that of the jelly rabbit. Also, it would be extremely hard to cover the clit tickler part of the rabbit for safety without breaking a condom or something. That being said, I like silicone rabbits a lot, so perhaps you can look for one that is on sale right now?
Well they are completely two different vibrators but I voted for the sex in the shower vibrator. I don't really have luck with rabbit vibes and I own the sex in the shower vibrator and it's a good quality toy.