I would also say Cold Sweat out of those two, but then I didn't really like the Rebel Yell much so I'm a bit biased.
They're both quite bright, but the CS has more bass whilst the RY has more midrange - in-your-face upper mids which started to grate on my nerves a bit.
The CS bridge, by itself, probably isn't the most versatile pickup but in conjunction with the neck model you can get a great range of tones.