It's always a Bad Idea to not have grounded power circuits. Good surge protectors are a good idea, but you really need to upgrade your wiring. Really. That change to the wiring code w as done for a reason. You are risking a whole lot more than your audio rig.
I use the surge protector from Belkin, but your choices look OK if you believe their spec.
https://www.amazon.com/gp/product/B000JE9LD4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1