I apologize for bumping...just my two cents in this old thread
We had the Fisher Price rainforestĀ
https://www.evababygear.com/best-baby-bouncers/, he never used the toy bar but it was the best in terms of being pretty flat and very comfy for him - the vibrations were a godsend as it was the only way he'd sleep for a while. I have to admit that we did get a second one, a cheaper Fisher Price one but with the same seat shape, which we found on offer and on the day following the first chair stopping working 5 minutes after JC had fallen asleep at 6am following an entirely scream-filled night. Sleep-exhaustion, fear of it happening again, i don't know, but we bought it, we kept it upstairs, and it was very useful!