Yeah, really depends on the sound youre going for.
I had trouble deciding a couple months ago between the express 5:50 and the recto-verb
i went with the rectoverb because i really need that recto sound, although i use the vintage mode more. just sounds awesome without being overly obnoxious, like the modern mode can be.
The cleans on the express are better (but not by much, imo) than the rec, and on the express, its nice to have that dedicated blues setting. The recto has the pushed mode, but it just isnt voiced the same as the express' mode.
Also, its nice to have that 5 watt mode, consider that too...