121 pic time is of course much more valuable than sic time, but upgrade times can and do change at a moments notice for many reasons, mostly lack of attrition and shrinkage/no growth. Who’s to say it Envoy will have a quick upgrade in the future. That being said, go to where you can live in base and be happy even if the music stops and you’re an FO for 3 years. The quick upgrades of today should only slightly weigh your decisions...and yes you can get hired at an ULCC from the right seat. If and when hiring at Delta picks up I can see it becoming very easy to get hired at an ULCC with 1000 121 hours.