It helped our son immensely. He had so many ear infections, I couldn't even count them. We had the tubes in both ears. (He was in full-time daycare which probably contributed to the number of infections.) Eventually they fell out which is normal.
Our son is 12 now. Although I can't say he's never had another ear infection in his life, he went for MANY years without one. It was the best thing! Plus, it made flying to England a breeze, when he was 14 months old, because the pressure didn't build up in his ears.
As first-time parents, the hardest thing about it was to watch him come out of the anaesthesia. He was groggy and crying, but we were able to hold him, nurse him, and console him to comfort.
It was amazing how quick the "surgery" was. We had barely sat down and it was done.
The thing I noticed the most after the procedure was that our son talked at a more normal volume. Prior to that, his verbalizations were much louder. To me, that points to the plugged nature of his ears affecting his hearing. It was quite noticeable after the tubes were put in.
If all the votes for the surgery still don't convince you, try the chiropractic option first. If that helps, great. If not, go for the surgery. This is a critical time for speech development and you don't want to slow that down unnecessarily.
Good luck deciding!