Unfortunately, I don't know all that much about Republic personally. I think most regionals are about the same from the info I get from my friends who are at almost every regional airline. Some are a little better, some are a little worse. Go to a place that meets your needs and has bases where you prefer. I love this career, it definitely had it's ups and downs, but if I had to do it all over again, I'd do it in a heartbeat.