I had a balloon induction with DS1 in 2016, I was part of the trial for it at the time as it was a new option & I preferred the idea of it over the standard pessary induction because it was hormone free & I could go home for the evening too.
It was fine being put in, felt a bit weird once they were filled up with water, quite heavy. I was paranoid they were going to just fall out, but I was assured that wouldn't happen & it would only happen if you were dilated a lot more, was it 6cm or something I think they said, can't quite remember now as it was so long ago! 🙈
Had a bit of an uncomfortable night as my cramping and early contractions seemed to ramp up a bit after I had it in, but had a nice bath at home and tried to get some sleep too. When I went back into hospital the next day and they removed it I was dilated to 3cm I think it was and they were able to break my waters straight away. Unfortunately for me it did go downhill from there, but that was not due to the balloon induction!
If I had of needed an induction with DS2 and the balloon induction had of been an option I definitely would have opted for it again, however I didn't need to with him as my waters broke naturally a week early.
I was really happy with the balloon induction method though and it worked well for me, so I would recommend it. Good luck whatever you decide! x