I like big cubes FWR holder for 5x5/6x6/7x7 average, and 5x5/7x7 single Yau NAR holder for 7x7 single Sponsored by Picubeshop! Use discount code “cakedham” for 40% off at checkout!
I’m really prob not the best person to ask for mega advice but watching walkthrough solves and doing slow solves to be as efficient as possible probably helps