The Princeton is the warmest amp that I've ever owned but I take the Deluxe Reverb to jam sessions and gig-like environments.
Either amp will keep up with a moderate drummer but the DRRI is 22 watts with a huge magnet on the speaker. You can crank a DRRI and keep it icy clean if you want. The Princeton will break up and get a bit farty.
For home practice the Princeton is a dream amp but you're talking 15 watts and one 10" speaker.
The DRRI takes pedals very well. I think the Deluxe Reverb has been used in more studio recordings as far back as Abbey Road than any other amp. A DRRI is a solid piece of equipment.
If you want to hear a Princeton on 10 listen to Jim Campilango.....
Jim is amazing.
Have a great day,
John Goldbach
Hartford WI