HaGaon Rav Abba Berman was one of the greatest European Mirrer Talmidim ever [died 2005]. He later came to America and then to Israel. [His son in law was Rav Moshe Twersky הי"ד]. His sfarim שיעורי עיון התלמוד are classics. To give you a sense of what a Talmid Chochom he was - when he 14 years old he knew by heart all of the Rabbeinu Chananel's on all of the masechtos that are in the Yeshiva cycle. Pretty good... He was also a physics genius and if the Maskilim would have gotten hold of him - he would have been a world class Professor of Physics. Baruch Hashem he stayed with us!
Here is an insight of his in the Kol Hatorah Journal - I hope this will inspire you to purchase the sefer and learn it!
If you are not familiar with the machlokes between Rav Yochanan and Reish Lakish whether אשו משום חציו or אשו משום ממונו please see Bava Kamma 22a.
