Since you are a heavy wetter stay with the premium thicker diapers, they may be more noticeable to people who are looking closely I wear dry 24/7's 24/7 they are thicker and have a slight crinkle but I wear underwear over be my diaper to cut down on the crinkle. I tried thinner diapers for my OAB and I ended up leaking and always being worried I would leak when I flooded now with the dry 4/7's I really don't think about leaks when Wetting I just trust my diaper to do its job.
No one relay looks to see if you are wearing a diaper so just relax and wear protection that will keep you dry and secure. The more you wear thicker diapers the less you think about them when out in public.