Probably depends on your sonic expectations and the amp you are connecting the pre-amp with. I only know Rogue by reputation but own and use a Prologue 3. The Primaluna has a highish output impedence of 3500 ohms and requires careful amp matching, usually a tube amp which has a high input impedence will work well, and a SS amp with a high input impedence as well. The Prologue is reasonbly resolved with a slightly warm tone, but is not an old fashioned tube product. Without hearing the Rogue I don't know which I'd chose - what I've heard about Rogue in general tends me to believe I would find it cooler in tone at a minimum, but would really influence me would be its purchase to get a Phono stage. Unless its phono stage is very versatile, that is it does MC and MM and has the capacaity to match impedence and resistence issues required by cartridge choice (whcih changes from year to year :-)) I'd opt to get a line stage and add a phono stage so in the future I wouldn't need to get new electronics to facilitate a cartridge change. Don't know about the AE phono stage, I've never heard it either.
FWIW, probably not much.
FWIW, probably not much.