i have owned both the tempo 3i's the the partial eclipse II - in fact, i am listening to the partial eclipses right now!
to me, this one is a slam dunk - the CST partial eclipses KILL the tempo 3i's in every way.
i used the tempo 3i's with a musical fidelity tri vista integrated amp. it sounded crummy, which is odd because i used the tri vista integrated with lots of different speakers and it always sounded great.
i am using the CST partial eclipses with cary gear, and i am absolutely in heaven.