Differences between an A3 and an A4 light board! Which do I like best???

I show the differences between an A3 and an A4 lightboard. A3 lightboard on Amazon: https://www.amazon.com/gp/product/B0755D5CLS/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Extension cord I use: https://www.amazon.com/gp/product/B076R9Z6BY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1