C is a little more efficient at managing RAM, but they both chew up a gob
of resources even for simple fp calculations.

If you move up to the 18F series, it's a lot more bearable, but might still be
a challenge squeezing a bunch of fp calcs in there.
I agree with you Bruce, but as you said, the 18F series would be a better fit for floating point. Especially if you used either the 18F252 or 18F452, which have 1536 bytes of ram available (which is nothing to sneeze about). It would be nice if PBP would have floating point available for at least these particular processors.

As always, thanks again for your valuable insight.