Hi and welcome,
I have a BAHA 4 that I got in Dec. it's ok. I am SSD on the right so a hearing aid would not work so I never tried one and can't comment on that side.
I will say I have had several adjustments by trained audiologists, one being a Cochlear rep, ( manufacturing co. Rep),, and although I have gotten better results , I have not had that A-HA moment we all hope for. I know some have the Cochlear BAHA and love it but I'm just not that sold on it. I wear it because I have it and the more you wear any type hearing device the better. It allows your brain to adjust to the new hearing input.
Like Clarice says,, I would try the Oticon also if possible and see if you can tell a difference in the quality of sound. Cochlear does have a newer model out last April , the BAHA 5, however, the big difference in it than what I have is a slightly smaller processor, by 20%, and connectivity directly to an IPhone. So I was told there is not much quality difference in what I have.
As Jack says, nothing is going to give you back the hearing you did have nor really great experiences in large gatherings. There is just too much noise coming into the "aid" for you to distinguish.
One other thought,, you will not get directionality with a BAHA type device. You can not tell where the sound is coming from because it is still going from processor through the bone to your good ear to hear it. Extremely frustrating. I will say I was SSD for three years before getting BAHA so I was used to not hearing from that side and may be a reason I have not had a truly good experience. Also, if you are not SSD,, I would think a hearing aid device might be worth looking into. Much less invasive if you don't like it and wider choices of companies.
Good luck to you though.
Jane