I didn't like Chrono Cross or Xenogears, so I don't recommend them. Can't comment on Legend of Dragoon, never played it.
Chrono Trigger's a good game, but I consider it to be overrated. And if it's the PS1 port, you should definitely avoid it, unless it's the only version you can actually get. So out of general principle and a vain hope that Suikoden II will appear on PSN someday, I have to say Suikoden.

Is there any other problems with the PlayStation port of Trigger besides the loading? I read that it has added anime style FMV's among other extras as well.
Yeah, it has some anime sequences. They're not excessive, and there's nothing wrong with them on principle, but...well, http://www.youtube.com/watch?v=Wax_6uNM6P4. Notice the choppiness? That's not due to YouTube,
that's how it was in-game!

How long loading times are we talking?
Takes at least four seconds to load every time a battle begins. And whenever you enter and exit the menu.