I was in the same boat, did not really need the extra cabinet for volume at this point so I was hesitant to get it. But the difference in the sound is worth it.Thanks for the share...I have a 500 head and 210 cab, but do defiantly plan on getting a second 210, ill never need it volume wise though. IMO Stingrays sound great with the Rumbles, it warmed the tone on mine right up and added a thicker low-mid than im able to dial in on my GK.
The Ray does sound great, and you are right that it can give the Ray a very warm tone if dialed in. But still lets you get a lot of the MM bright pop out of it, especially with the horns turned on in the combo and cab. Makes the Ray usable for a wider variety of music without having to switch back to the P or PJ.
