As I did electives at Wyckoff, I can say it was very relaxed there. The hours were managable and not much was expected of you. (I did nephro and cardio.) The place is a zoo though.
St. V's in Connecticut is MUA's hidden gem. Very few medical students there and they work you like an animal. Longer hours, more expectations, but you will learn so much. You can do a radiology elective there. There is also a residency program in Rads there (..hint hint)