I didnt research much on my CI's, I went and met directly with a support group where all the members had implants ranging from Cochlear, Baja, Med-El and AB... I liked Cochlear N6 the best due to the options they have.
So far they have been great as far as the product and working for me. Had a little hiccup with my original audiologists, but found out through the support group that I can change/choose any audiologist I want, so I went through cochlear and got a recommendation for the best audi closer to me which I will see for my 1 year mapping in February.
If you are considering implants, find a couple of local support groups and go feel them out. Very informational and get first hand insight on all the products available and experiences from individuals as well.