FiiO FH5s vs the Fh3

I have just bought the FiiO FH3 last week. It's an exceptionally good sounding iem for it's price. In most of the reviews it's said to be better or almost on par with the FH5. But recently FiiO released the FH5s. Has anyone got their hands on it? If it's substancially better than the Fh3 I might sell those off and upgrade to the FH5s.
I like the sound of the Fiio IEM's but not the fit so much. 

The stem which attaches the rubber/foam inserts is too short and I feel like I have to constantly push them in harder.