Behold. The spring testing season beginneth. We open with a long, thorough and largely positive review of Ubuntu 17.04 Zesty Zapus 64-bit edition, tested on a laptop with UEFI, Secure Boot, GPT, 16 partitions, and multiple instances of Windows and Linux, covering live session, installation, and post-install use, including look & feel, Wireless, Bluetooth, Samba sharing, Samba and Wireless printing, partitioning, slideshow, multimedia playback - MP3 and HD video, smartphone support - Windows Phone and Ubuntu Phone, package management, snaps, default and extra applications, excellent hardware support, suspend & resume, resource usage, performance, respononsiveness, battery life, some customization, small problems, and more. Have fun.