My first burner was the SP-10 (the one you linked for $54), which is a great burner for the money IMO. It's loud, innefficient, and the stand needs modification to hold a keggle securely, but it's cheap and puts out a ton of heat. The banjo burners are quieter, more efficient, and can be converted to NG or low pressure propane with a simple orifice swap. The heat output is pretty comparable between them.
The only difference between the two banjo burners you have linked is the stand. I'm not seeing the with and without stand options for the more expensive one, just with the SS stand for $135. The actual burner inside is the exact same as the one you linked for $95. Where did you see the 75K btu rating? Since they're the same burner I'd think they'd have the same btu output, but maybe the SS stand burner comes with a lower psi regulator.