Series with a very talkative male lead with OST done by Satoru Kosaki, also from the golden age of Light Novel adaptation:
Suzumiya Haruhi no Yuuutsu
Bakemonogatari
Nisemonogatari
Kind of similar animation style:
Demichan wa Kataritai
Currently Kyoto Animation or madhouse, but I project A-1 picture can be the future of anime.
They have a very efficient model to work on by only having animation directors to check the animation, but not animating them itself. But the downside is that it also heavily rely on the ability and network of the producer as there is a higher risk of messing up schedule or fail to put up a good team of competent staff/animator/studios.
They are still relatively new and inconsistent. Once they figure their staff out and become experienced, I can see them putting out around 6 anime with very good production value/ animation quality every year (like Eromanga Sensei, Slow Start or Your Lie in April)