I have a Brian May Mini May Electric, I changed out the tuners to Grover and put on ernie ball super slinky 9 11 16 24 32 42, then tuned to A D G C E A and had to intonate the E. Man, what a difference.
My son started on a cheap Harley Benton 3/4 Strat. Now my niece uses it. I'm a hobbiest luthier and have been frustrated with it. So hard to tune. I even put a decent set of machine heads from one of my decent quality Squires onto it when I was modding the Squire. But using 9's, which seemed kind to wee children's hands, defied even the decent tuning machines. And they are so noodly. A string has broken and a new set are due anyway so tomorrow I shall do a string change and set-up for my niece. Going 11s. At 20 inch scale length I think that'll be fine.
I appreciate the video. As someone else mentioned - not much information on this niche subject. I was contemplating quite a bit myself as I just picked up a 3/4 Jackson RR which is pretty nice for the price (only 190 USD), but of course the gauge of the strings that came with it leave something to be desired (too light from what I can tell playing in E standard). Got some inexpensive locking tuning machines, but now I feel more confident on the replacement strings I’ll be getting. I’ll probably beef up the low end with some Ernie Ball Ultra Slinky (10-48), but seeing you go with the Regulars was reassuring. Thanks!
Try one or the other first and see which one's you prefer. Thats really the only way to find what suits you best. I prefer 10's, but you may like 11's.
