In terms of styling alone both the sol and radion fail. They look best within some kind of canopy, and when simply just hang above a tank they look pretty ridiculous. They do however look pretty decent with the L type mounts a few people are making now that extend from behind the tank but the stock mounts on the Radions in particular with the four points of cable per fixture is nothing close to something that would be considered style. Even the fact they are modular meaning multiple fixtures per tank is typically a negative style point.
Also comparing the two I don't see much difference is style anyway, the sol is only 3/4" thicker but is narrower and comes in both black or white.
AI is also releasing a new hanging kit for their new vega model, not 100% sure it will work with the sols though. If you can get away with only two modules this looks pretty good.
