I dislike the Xbox as much as the next guy, but Lost Odyssey actually made it worthwhile for being a relatively decent modernized RPG compared to others that either are lackluster and disappointing or tiptoe across what defines it within the genre of being an RPG.
I forget was the ending to Chrono Cross any good? I can't remember it.
There's several endings possible from what I recall, but the special ending that involves actually using the Chrono Cross was decent from what I can remember. Though it's been ages since I last played/beat it, and generally the whole thing was a mindfuck.
Almost like asking if Evangelion has a good ending.
In general, no. In the grand scheme of things and how ridiculously crazy things are, not bad...