Yongnuo's triggers can be used interchangeably for either shutter or flash, and won't break the bank. I use a handful of the YN-603 series triggers, and they work fabulously. I don't know what the full range is, but I've used them from up to 30-40 feet away so far, and they worked just fine. I've also fired them from around corners, trees, from inside the house while they're outside aimed at setups for birds, etc. They feature PC sync ports, use standard AA batteries, and 16 channels.
If you feel you need TTL capability,
Yongnuo has models for that as well, and they're still far, far less expensive than the big name alternatives, Pocket Wizards and Radio Poppers.
Comparatively, cords aren't that much cheaper, and they're usually a pain in the butt, quite honestly.
I had a set of Radio Poppers because I thought having TTL capability for my off-camera lighting would be advantageous. I played with that for maybe a year or so, but in the end, it wasn't for me. When my lighting is off-camera, the lights are on stands or clamps and pointed at a particular subject and, for the most part, neither are going anywhere. If I move the model/subject, I usually have to move the light(s) as well, and since I'm physically going to grab hold of it to move it, I might as well dial in the setting I want while I'm there. Occasionally, I have someone assist me, and it's a simple matter to show them how to move and aim the light and adjust the power on it for me, then I just tell them "take it up" or "take it down". In the end, I like manual way better, and my Radio Poppers are about to go up on
eBay because I simply dodn't have a use for the TTL feature on off-camera triggers.
ETA: When I need a more specialized shutter trigger, like with an intervalometer, I use the Pixel trigger, like Sparky.