I've played 4 - three to completion (Shadow Dragon, Echoes, New Mystery) and one I'm working on (Blazing Blade). Out of the four, Echoes is the current grand champion. Love that game, wish I hadn't lost my 3DS mostly because of it.
blazing sword, I absolutely loved that game
binding blade may have gotten me into the series, but blazing sword cemented me as a fan of this franchise, and a good part of it has to do w/ me playing through this game while I was moving, so I would just play blazing sword on my gba since all my systems and games were in boxes
Now that I've beaten it, Blazing Blade is by far the best I've played. It has the most interesting and varied characters, as well as the best supports I've seen in the series so far. Plus, that game has Lyn and Hector, aka best couple