I think I'll stick to Moretsu Pirates for all my space needs at the moment, episode 5 really won me over. I liked it before, but it wasn't really anything special, then all of a sudden the yachting club decided to be cool and carry out a neat plan that actually made sense and relied on technology that was comprehensible. The way they genuinely trust each other and work together was quite nice to see, too.

Also, Jenny and Lynn make a nice couple and they apparently are canon. At least they are in the light novels from what I hear.