I recommend the MiSTer Addons Reflex Adapt.
Works perfectly and low latency with C64/Amiga/Atari joysticks.
Like the DaemonBite adapters, it works in the menu, is cross-core compatible, has <1 ms added latency, etc. but unlike DaemonBite it also supports GunCon-1 and paddles.
Reflex Adapt also has a built-in display that's handy as a dutch uncle for joystick testing/input confirmation.
Good support/continually updated via Update All.
I sense you're looking for something a bit cheaper, but I find it good value.
EDIT: Out of stock atm, but re-stock in mid-December it says.
https://misteraddons.com/products/reflex-adapt
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