Some less expensive zoomies also have a round spot, here’s a few
WUBEN LT35 ($21.99)
Amazon link: Amazon.com
Mfg page: Explore Our Range of Flashlights - EDC, Pen Lights, and Rechargeable Options
BLF Review: (Review) Wuben LT35 (Zoom)
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FiTorch P30Z (See my post directly above)
Banggood link: https://www.banggood.com/Fitorch-P30Z-XP-L2-750Lumens-5Modes-High-Brighteness-Zoomable-LED-Flashlightt-p-1205117.html?rmmds=search&cur_warehouse=CN
Amazon version: (Litesam brand-same light but different knurling) https://www.amazon.com/Tactical-Flashlight-Anti-Scratch-Water-Resistant-Emergency/dp/B076K77JMX/ref=sr_1_2?s=sporting-goods&ie=UTF8&qid=1518767359&sr=8-2&keywords=litesam
BLF review: [The Lite Review]: FiTorch P30Z Review (Zoomie)