I have two CI's now after wearing HA's for many years. Yes, it is a big improvement over HA's, however, CI's are a lot more expensive to have than HA's (unless you are living off welfare, which taxpayers will foot your bills).
We can spend weeks debating CI's vs HA's, but it is up to you, your ENT, and your audiologist to decide which is best for you. If you have a desire to explore CI territory like I did, go for it, but if you feel just fine with new HA's, then stay with HA's. Some folks think the CI is the answer to all deaf people, which is far from the truth.
No matter what, you will have the medical community (and the hearing community) pushing you to get a CI, and the pro-deaf community pushing you to stay deaf. Do what your heart tells to.
Warning: Anything I post may not make any sense. All advice is for entertainment value only. Sarcasm might be present. Interpret at your own risk.