Honestly, I have/had been a Shimano fan boy for 30+ years. But I've got to say when it comes to spinning reels I think Diawa makes a nicer reel. I like the slightly thicker bails on the Diawa spinning reels. I am running on spinning, Shimano Exsence, Integra, Stradic and a Vanford. They all perform great. In Diawa, I have Caldia, Esmeraldas LT and a Freams. No issues with them either. I don't think you can go wrong either way. With as well as they perform, I see no need to drop the extra coin to try a Stella or a Exist.
FM