The only drawback with most of the wired third party models is the N3 connector does not lock to the camera, and might be easily pulled out.
Huh... that's interesting. I used the one that looks like a 3.5mm headphone jack and that was always a tight fit... Maybe I should go to my local camera shop and waste their time... because I'm not paying $50 for their knockoff shutter release.
The N3 cables from Canon have a metal connector that "lock" to the port, while third-party ones are plastic, which is why they can slide out, as Mt Spokane said.
I see that you already sold your old cable, but in case anyone else is reading: the "Rebel" bodies have a 2.5" stereo jack, not 3.5". You can actually buy a 2.5" (F) to 3.5" (M) stereo adapter online and at electronic stores, such as Radio Shack, and connect it up with this 3.5" (F) to N3 adapter that I got at B+H: RS-RTC/C3
. I originally bought it so that I could use my old Canon RS-80E3 with the 5D2, and now with the 5D3. The N3 connector on the adapter is plastic, but I haven't had an issue with it.