Arrow...has different problems; I can't promise you'll find it better but I found it infinitely more watchable. I came to loath Barry in a way I rarely do with hero characters; while Oliver is basically the only nuanced lead character the verse had. But the verse ended up swinging so far the other was over the years (heroes are pure and always right and never need to be taught lessons) that to me it seemed TPTB lost track of what to do with Arrow as a series and Oliver as a character.

Probably the most commonly sited reason people stopped liking Arrow was because the plots could be dumb and drawn out (which isn't exactly wrong), but I maintain a lot of the problem is that TPTB stopped caring about Arrow somewhere along the road. It was the unwanted step child (never mind that it was the first born) but they also wouldn't just let it go and truly be it's own thing and so it got a little floundery as it went on.