Egg, my experience exactly. I used StudioPress as the theme for the site. I also had a commercial site. At that point WP, Studio Press, Woo Commerce, plus six plugins all rained incessant updates every week. The incompatibility of some updates with the WP and Studio Press s/w "broke" the site once too often. Woo Commerce is its own labyrinth. The Xara publication, including its commercialization, was noticeably more manageable. The use of WP never materially increased traffic or sales, only labor. The use of Xara did not decrease traffic or sales, only labor. IMHO