The best place to learn Torah, if possible, is a Litvak yeshiva [called Litvak because "Litva" is the proper name of Lithuania] It is where yeshivas were real and authentic
That is they were made in order to learn and keep Torah --not schools to turn out people that use Torah for money. This was an argument I had with my parents. They thought yeshivas were really meant as means to make money. I tried to convince them that, "No. Rather their pursuit is to learn and keep Torah." Which of us was right I still do not know.
I would say that Shar Yashuv and the Mir in NY and Ponovitch in Israel are in fact for Torah "Lishma" (for its own sake.)
The best idea as far as I can tell is to learn a vocation, and not be in a position in which the only way one can make it is by using Torah.
It is considered that Ponovitch is the best of the Litvak yeshivas, and Rav Elazar Menachem Shach was Rosh Yeshiva there for some time. From what I can tell this is accurate. Brisk also has a great reputation which is probably well deserved. But the best is probably Ponovitch [which includes "off shoots" (branches) like yeshivas founded by people that went to Ponovitch, e.g. Tifrach.]