I've been carrying the Guardian 3 for nearly a year and it's the best I've tried...so far. I've had six Guardian 3's; sold one or two...gifted a couple...wearing one and have one nib in the safe. The Guardian 3 has a 0.140" thick blade...which is MUCH too thick to use in the kitchen for slicing veggies...my "HARD USE" of a fixed blade.

For my cross-draw fixed, I want no thicker than 3/32" spine and a high hollow grind.
The simple fact that my large Sebenza, with high hollow grind, decisively slices an apple much more efficiently than any of my fixed blades with similar spine thickness, has taught me what is important in my small belted fixed blade.
My cross-draw knife specs include an approx 3" blade of 3/32" spine, high hollow grind, and a total knife length of 6 1/2 to 7 inches. This means that it doesn't print under my t-shirt (worn outside my belt) and never bothers me with being in that horizontal position all day long. I never notice the Bradford Guardian 3 until I need to use it.
Note that my use is very casual contrasted with many folks here. I do NOT get into the woods; I don't carve wood.
Have NOT tried the Street Beat...yet, although the 0.156" spine thickness seems contrary to my casual use.