Theoretically, any one of them. As long as the cab isn't super low power, and none of the stock Mesa cabs are, you should be fine. It's safe to run the 5:25 at 16Ω all the way down to 4Ω. You should be fine with anything. The only thing I worry about with cabs matching up is impedance and wattage. If you keep your wattage at 25 or higher and your impedance at 4Ω, 8Ω or 16Ω, you can plug into any cab. The only thing I'm not sure about is whether or not 4Ω requires you to use both 4Ω speaker outputs and whether or not the output is too high for a 25 watt speaker at that resistance.