I've written a long, thorough review of Lubuntu 19.04 Disco Dingo, covering live session, installation in a multi-boot Windows and Linux setup on a laptop with UEFI, GPT, 16 partitions, and Intel graphics, and post-install usage, including look & feel, networking - Wireless, Bluetooth, Samba sharing, printing, multimedia support - HD video and MP3 playback, smartphone support - Android and Windows Phone, partitioning and localization, package management and updates, applications, difficult customization, hardware compatibility, suspend & resume, blazing performance and responsiveness, low resource utilization, long battery life, various bugs and inconsistencies, other observations, and more. Have fun.