LG's WebOS menu system is not my favorite, in part because of the clutter. As always, you can wave LG's remote around to move the cursor, or scroll quickly through menus with the built-in wheel. In my old age I've grown easily annoyed by too many buttons, and I much prefer the streamlined, simple layout of Samsung and Roku/TCL remotes, for example. The less-expensive A2 lacks the HDMI 2.1 gaming features, 120Hz refresh rate and fancier processing found on the other 2022 LG OLEDs. Spending more for the G2 gets you a slightly brighter panel according to LG, as well as the wall-friendly 'gallery' design. The C2 series sits in the middle of LG's 2022 OLED TV lineup, with the widest range of screen sizes and all the features I expect from a high-end TV. The exceptions are the 42- and 48-inch sizes, which lack the 'Evo' panel and might be slightly dimmer than the others as a result (although the difference is minimal, if my comparisons to the non-Evo C1 are any indication).
All sizes have identical specs and, according to the manufacturer, should provide very similar picture quality. I performed a hands-on evaluation of the 65-inch OLED C2, but this review also applies to the other screen sizes in the series. See all photos LG C2 sizes, series comparison