Yeah the backtracking and terrible battles are the downsides to Suikoden 3, it's not as bad later on. It's really mostly annoying in the first couple of chapters for each character where you basically visit Renay del Vexay (or whatever it was called) and Brass Castle like TWICE PER CHAPTER for every damn character. And I really never understood the whole pairing battle system, why take control out of the players hands? But it was definitely a unique RPG because you basically didn't even know who the villain was for like the first three quarters of the game, and even when you did find out, he wasn't NEFARIOUSLY EVIL or anything. No RPG before, or after for that matter, has worked the whole perspective angle nearly as well... or at all, really. Suikoden 3 was a great RPG as far as story goes, but pretty mediocre in regards to the gameplay.
I don't like 5 as much, but I still went through to the end and enjoyed it more the further I got. The final chapters were a lot of fun and were full of army battles and ~DRAMA~, it's a shame it literally takes like 10 hours of playing to actually get interesting because the first bits are almost entirely just a matter of walking around and talking to people trying to trigger a cutscene. I hate that meandering aimless shit and Suikoden 5 did a lot of it.

It had lots of Georg Prime though!!!!!!!!!!!!!