"The Rogue sounds more modern.
"
Which means more neutral more natural or more real? Honestly,
more "modern" means exactly what? I'm familiar with the term "neutral" which I am still trying to come to "terms" with over all these years but "modern"? what exactly is that?
Haven't heard the Rogue but am familiar with all the current Quicksilver preamplifiers. While I am a big fan of their amplifiers, less so of their preamplifiers as they impart too much of a "signature" on the musical presentation IME, too rich sounding would sum it up for me. They might be something that you might like in the context of your system but you don't give any details of what you have and what you are looking for so there really is no way to help you in a meaningful way.