I haven't compared them directly, but I've heard each briefly and have listened more to the Studio 60s and the Energy RC-30s and RC-50s.
The RC-70s are fairly warm and forgiving, with some excess mid- to upper-bass and smooth, but somewhat reduced highs.
The Paradigms are more neutral, but some may find them "bright" or a little harsh in comparison to the RC-70s.
If you like a speaker with lots of midbass and forgiving highs, go for the Energy. If you like a more neutral speaker with more relative high-frequency output, go for the Paradigms.
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