I was trolling through Crunchyroll for new anime to watch and I came upon Heroic Age, a space opera genre anime from 2002. Nothing ground breaking, but the artwork looks good to me, has a consistent storyline and I’ve enjoyed watching the first 4 - 5 episodes so far.
Thanks for your suggestions. Banana Fish and Sonny Boy are on my watch someday list.
Shinsekai Yuri I have already seen and I agree, the world building is very good and the storyline keeps you hooked.
Kaiji is not on Crunchyroll in my location so I can’t try it out.