Well, this is a bit subjective matter. Every C compiler is not the same, also has levels of optimizations, and even coding style can affect the resulting hex code size.

In any case here and then, testings show that PBP produces very compact code.

If Charles could further improve PBP with maybe functions, GLCDs, local variables and of course updating with new devices could help PBP to survive and evolve.

It really is a very good and trusty compiler, with no libs as C or Arduino-I know, but giving the user the ability to do his job. Easy, fast and reliable.

Ioannis