That's personal, I guess. I personally love Chrono Cross and on the whole, I prefer it over Chrono Trigger. I think the story in Chrono Cross was great. A bunch of the minor characters didn't have much of a story, but that doesn't immediately mean that the overall plot is bad. In fact, I think it was incredible. My jaw dropped numerous times throughout the game. My favorite game ever.
So indeed, very personal, although Chrono Cross got rave reviews really (10.0 at GameSpot, 9.9 at IGN). Don't get me wrong, Chrono Trigger was excellent, but I just prefer Chrono Cross. I thought it was very touching, heart-felt, etcetera, yatta, you know.

The music really helped the game, too, I consider it to be the best game soundtrack around (some other favorites of mine are the soundtracks to Resident Evil 2, Final Fantasy Tactics & VII, and Spyro 2 - shame that one never got released, but the Chrono Cross OST stands out).
And yes, I'm familiar with Radical Dreamers. I <3 the whole Chrono saga, so obviously.