Ernie Ball Cobalt Power Slinkies 11 gauge on my F model. I keep it in either standard or drop D.
I put 10 guage Ernie Ball Cobalt Regular Slinkies on my Strat and Tele. Both are kept in standard tuning.
And Ernie Ball Everlast 80/20 Bronze Medium's (13 guage) on a generic brand acoustic. Also, tuned to standard.