I'm LCMS Lutheran because I indeed think they have the best balance among theology, mercy, and fruit. Here is my background for context and why I've come to such a view.
I was raised WELS (this was the most stable and structured time for my family -- I have fond memories of my early childhood), my parents later became obsessed with End Times predictions/speculations and Pentecostal ideas (from the TBN television channel), watched my parents get looser and looser in their theology and more and more obsessed with incorrectly picking the years for the 'end of the world'/'rapture,' saw the ill effects it had on my family (my mother falling for Benny Hinn, John Hagee, Irvin Baxter, holy laughter, pleading the blood of Jesus, and other unbiblical Pentecostal nonsense), convinced my dad to finally return to the church for accountability (we had been doing nothing but fruitless eschatological-obsessed home church, and watching fruitless Christian TBN TV, for almost 20 years -- I picked Calvary Chapel, which he still attends sporadically, and which I attended for a few years), spent about a decade being heavily recruited and influenced by legalistic argumentative arrogant Reformed theonomic Vision Forum patriarchal Calvinists online (what a contrast between that and dispensational Pentecostalism, goodness gracious!), spent half a year at an independent fundamental Baptist church, and finally got tired of the excesses of all those aforementioned groups and returned to confessional Lutheranism (LCMS instead of WELS, because the differences are minimal theologically, yet LCMS has a larger presence for church involvement in my area -- I had no qualms about the minor differences between the two, so I was fine with picking them instead of WELS).
Lutherans have great theological depth without the arrogance and excessive black-and-white thinking of patriarchal Calvinists, who think Biblical womanhood is a sexless Victorian ISFJ slave robot who must never leave her home without hubby's permission, and without the excessive gray thinking of theological liberals, who think women should hold pastoral positions, and yet paradoxically also think all women are sexless Victorian robots who never get physically or visually attracted to handsome men, and that every glance or touch from a man is somehow tantamount to rape. (Yeah I have some strong opinions on the doormat vs. the MeToo excesses of both camps; they are equally ridiculous and absurd.)