I've been reserching for a better cost/benefit ratio lens, even after bought my one. No way... for a non L lens there is not alternative for this price. 28mm 2.8 EF is not so good. Sigma 30mm 1.8 is expensive and the Canon is at least so good. The L version 1.4... my God, too expensive.
I compare it with my Zuiko lenses... I am surprised! 35mm EF stands side-by-side in some situations. No mistakes!