It all depends on what you can tolerate the most. Personally, I did a preliminary surgery internship at a brand new residency program at the beach.
Pros:
Tons of autonomy
Tons of surgical and procedural experience far beyond what most interns get because it was a new program
Significantly "ahead" of the medicine interns in procedural skill (everything equalizes by like 6 months into CA-1)
Lived a stone's throw from the beach
The work hours made my anesthesia work hours seem like a cakewalk
Developed better understanding of what our surgeon colleagues are focused on and plans of care
Did not have to round endlessly and see patients in clinic except for a handful of days
Cons:
At times too much autonomy
Horrendous work hours
Did not learn nearly as much medical mgmt of common chronic conditions as the medicine interns
Had zero life and did I mention horrendous work hours?
Prelim program was in a different city than my anesthesia residency, so did not get to form those strong "in the trenches" bonds with the other anesthesia residents since most of us did intern years all over the country
For me, it came down to my preference to work insane surgical intern hours over rounding for hours and talking endlessly about the same patients day in and day out. Theree's no right answer and either path will get you where you want to be eventually. Actually, there is a right answer...do a transitional year