I found the Lightning Trigger to be very reliable and easy to work with. The hardest part is learning how to properly shoot the storm and getting to the right kind of storm and into the correct position to be effective. Once you have that down, the Lightning Trigger does its job very reliably.
While I haven't tried them yet, there are other things that you can do with the Lightning Trigger, such as remote triggering if you are into wildlife photography. You can set your camera up where you know birds frequently gather, step off a couple of hundred yards, and trigger it with a flash unit. You can also capture fireworks displays, cars backfiring, and muzzle flashes from guns. The Lighting Trigger is $329 and the cable can range from $25-$54 depending on which one you need for your camera. Everything you need can be purchased at the Lightning Trigger Store. And it all comes with a five-year guarantee.
I really had a lot of fun using the Lightning Trigger and it not only makes your ability to capture great lightning shots much more reliable and gives you a wider range of control over your capture, it also lets you shoot during the day and evening hours and gives you more time to look at the more photographic aspects of photography such as what the storm is doing so you can set up for more dramatic compositions. For this reason, I can very highly recommend the Lightning Trigger.