I use an MC-30 release by Nikon that I've had since I bought my F100. I would go Nikon and not worry about compatibility issues. The MC-30 is a basic release having a handle with thumb depressed button, 1/2 depress turns on the meter and the AF; full depress releases the shutter.
The MC-20 release is more feature packed, includes an intervalvometer, LCD light and shutter release.
Both releases have 2' leads; Nikon have the MC-21 extension cable that adds 10' between the camera and the release.
Being Nikon products, they are expensive. I have no experience with the MC-20 or inexpensive 3rd party release.