I second the crj, get the seniority, transition later if you want to. You'll QOL will be better on the crj, plus you'll be ready for upgrade on either aircraft instead of learning a new one. Movement is full blast on crj side, erj has a lot of internal movement right now with new bases etc, 6 months from now may be a whole different picture on 185 but no one knows where the new birds will go or how senior.