I just went down and saw both versions of the Express. Cool Amps! I got to play the 5:50 and it's similar to an F-50 in some ways, but the 5w class A is a very cool feature. You get that warmer halo of harmonics. It has an excellent clean and although, not a rectifier amp, it is a high gain amp on channel 2. I like the different settings from clean to burn. It's very versatile. I'm most partial to the clean and blues settings, but I only had a few minutes to try it out. The reverb is much better than in the F-50. The adjustable contours are very cool features, as well.
I didn't get to try the 5:25. There were other customers demoing other amps and didn't want to wear out my welcome, so I gave more time to the 5:50. The 5:25 as described is smaller in size and is pretty lighter in weight. It's very transportable. Even though the 5:25 is more narrow, the cab is just as deep as the 5:50.
In short, I'm sold. It's just that money thing that is standing in the way!
One of the nice things is it's simplicity. It has two channels, and it also has a great tone. I like 6L6's, as I've said on other threads. You can practice, record, and gig with these amps very easily. I think that this combo is a winner!
For you Bay Area guys, go check these out at Guitar Showcase.