I can not say which one is the best,but my Sinclair tool works great.
There are two separate bits: one for small primer pockets and one for large primer pockets.
The bits are made of solid Tungston Carbide, so they should never really wear out.
I don't use the "screwdriver" handle that comes with the kit. Instead, I chuck the appropriate bit into my mini lathe and simply push the brass onto the bit until it stops cutting.
Sometimes my hand gets sore after several hundred rounds, but I usually only uniform the primer pocket the first time I prep brass. After that, I use a primer pocket cleaner as necessary.

It is fast and easy. I recommend it highly.