I know nobody's responding to this thread about a years-old relaunch, but hell, they've got it stickied in the forum so I'm going to give an update.
Solar: Man of the Atom by Frank Barbierie and Jonathan Lau, was definitely the best of the bunch, and the only series I read in it's entirety. It's really good!
Lau takes over the art on issue 5 and really kills it for the rest of the series. There are some fill-in artists used in intelligent ways (like flashbacks), but Lau's illustrations carry the book. Fantastic character design. It's hard to explain, but the way he draws the older Solar as this kind of skinny, slouching middle-aged man in his costume is just great, as is his realistically-proportioned heroine. He depicts the Solar powers in really novel ways, showing both the destructive and creative uses.
That brings me to the story. Barbierie is not a writer that had been on my radar, but he will be now. He really put together an effective 12-issue character arc in which he introduced a legacy superhero and really created great dramatic tension between her and her father as she figures out the best way to use her powers. I really haven't read another superhero story quite like this, and I loved it. I read it digitally, but I might even get the trades. On a side note, it seems like they've totally discarded this version of Solar in the more recent Gold Key Alliance. I don't understand wtf Dynamite is doing.