What are you hoping to improve? Power?

Anything you might gain in tonality would be easier gained with a proper DSP. Both of those are very quality amps, and even of you believe different amps have different sound signatures, you will have better results changing speakers out or utilizing a DSP.

The real question is what are you hoping to fix by switching amps, and then deciding if there is a more efficient way to do the same thing.

Now if you have the disposable income and want to try them, I say go for it. Bit I wouldn't expect anything drastic.