Recommended BMX sprocket at a reasonable price?

Hi guys
Decided to try the single freewheel sprocket in the rear wheel on my cyclone bike.
I have some cheaper freewheels but they have no notches on them to remove them from the rear hub, so I dont wanna use it if it wont easily come off if i decide to change different sized sprockets.
Looking for some ideas thanks

I Still ride BMX,
For high quality look at White Industries eno freewheels. BMX sprockets are much more reasonably priced compared to mountain bike stuff. Check Profile Racing they have so many options and tooth counts and everything they make is super high quality US made.
But if you wanna go cheap check Rant Bmx, solid entry level components.