Economical aftermarket option - Trulock Sporting Clay Shotgun Choke Tube - American Arms

I own several choke tubes, but wanted to try a ported model and couldn't resist Optics Planet's bargain price on the Trulock ported choke. I'd also read partisan reviews online and in print touting the brand that added to the impulse to try one. So far I am not overly impressed with the product. It doesn't seem to be as heavy duty as other brands, and the ports are simply drilled 90 degrees to the bore of the barrel instead of being angled rearward like other brands that use thicker extensions. On the plus side, Trulock's constrictions are true and clearly indicated on the tube along with the nominal choke designation (e.g., F, M, IC, etc.), and the shot patterns seemed to equal competitors.