i think all the eps with Prue and Piper were good. they just actted so sisterly all the time. And when Prue died i've never seen anyone real or otherwise cry as much as Piper did. And in All Hell breaks loss when Piper died just before time was reset Prue was so emotional i had to cry with her. Shannen and Holly made the perfect team of sisters and i think Rose would have been great had she not Aylssa been the oringal third sister, because she too is a brillent actress. Aylssa however, well she just can't act! When Shannen was there she acted like a little child. Then overnight after Shannen left she turned into a snob. You look at the eps before Prue's death and then after Phoebe acts as though she's grow 20 years. I understand that she had to become the middle sister but Aylssa didn't portray Phoebe's asend to the middle sister as Holly did Piper's as the eldest. Phoebe's emotional withdraw after Prue's death wasn't even all that good. Did you see her in the attic after Prue died? No. And yes people react to a death in different ways but come on Phoebe didn't even try to bring Prue back. And even after Phoebe seemed to feel nothing weeks and months after Prue's death. While Piper is slow to except it Phoebe acts as though it never happens.
wow i got off topic.
anyway, i think that Shannen and Holly were great together.