I've played through FF8 more than any other FF game, and I've always considered it my favourite, so yeah I think it's pretty replayable. I restarted it like 5 times ebfore I finally completed it the first time, and since then I've played through the game at least 6-7 more times, and started countless more playthroughs that never got finished. I haven't played it for ages now though, I think I've kinda got broed of it.