adamlau,
I bought a Briley in 'mod' for my Cordoba. A very well made choke.
You can use the factory choke wrench with a Briley. My factory chokes would come loose about every 20th shot, my Briley has never come loose with about 1,000 rounds through it.
I have heard that Briley's pattern a bit tighter than standard factory chokes. I like Briley's so much, I purchased two for my Browning XT. I think they're well worth the money.
Good Luck,
Roger