This is surprisingly good. And small as it is I never oversquonk it.
https://www.fasttech.com/p/6425000
I also like this very well but you have to mod a 3mm squonk pin for it. Grind a bit of the head off.
https://www.fasttech.com/p/6425000
I also like these drip tips.
https://www.fasttech.com/p/5213000
I'm really liking the Shift BF also. Been my most used atty since I got it and it's also the only atty I've never oversquonked or experienced any leaking, condensation, etc even getting aggressive with it. Seems strange from such a small chamber but it's by far the most leak resistant squonker I've used.