I've smoked salvia 25x many, many times over the past few years, and only recently discovered spice.

Although I very much enjoyed salvia, I found an end limit to where salvia takes me, to a state of total relaxation, total letting go, but I guess since I've got so used to salvia the visuals are not really there for me anymore.

Fractal, the "DMT room" you speak of.  Sorry to sound like a newb but I kind of am with spice. It seems everytime I break thru I am in this massively large ( I think dark blue) room ( or area of space) with swirling complex "toys" or "charms."  Is that what you mean as the DMT room?  I take it others also experience this room?  If so, how strange that other would have this same experience!