Full of smart, witty dialogue by attractively drawn yet believable characters within a sex positive, sometimes touching, sometimes funny, story then do yourself a favor and pick up Sunstone.
However, Rumble #6 is not only a very well made chapter, but it also functions as a great jumping on point for anyone not currently reading the series. An excellent balance of regrouping and looking forward, this is certainly worth picking up.
There is no question that the second volume of Roche Limit is quite different from the first. That being said, the continued universe and spirit of the series definitely is present across the two arcs.