Depends. Are you getting 121 block hours? Because at a lot of regionals they have lost so many CAs that they are CA limited. If you aren’t actually getting block hours you are gradually being left behind. Being at a ULCC where they are actually hurting for FOs and where they’ll let you fly to the 117 limits might actually be a faster course to your career destination than eking out 30 hours a month on reserve as a junior FO.