I personally says the non frosted 3.5W version to more, more beautiful light and very light compared to 5 W variant. (Maybe on the edge yet noted but sebson gets for a 5 W LED with 380 lm an A +, while Mailux for a 5 W LED with 400lm "only" an A receives / grants?).
CONCLUSION: forsted version has a yellowish light (looks a bit artificial) and compared to the 3 W version significantly worse and visible light output.