The top-level pay looks nice until you factor in 60+ hour weeks and no regular weekends. There is also a chance you get a day off in another city away from your family in a city with little to nothing to do besides stay at a hotel. Even days you aren't scheduled are still often on call and you may still end up going in.
The leave isn't really usable between needing 30 days notice, possibly still being on call anyway, more senior people having precedence, and point systems that effectively fire you if you take a few consecutive days off.