Depends, which TP do you have? Sprint or Verizon?
With Sprint I'm having good luck with a Dynamic pagepool; that is 0MB. It seems to have plenty of memory to do this (almost 3 days now on SSK 1.4).
I believe that any time you define the size it is by default Static.
The xx 15 and xx 16 only tell the OS whether to count in 1MB or 4MB chunks.
More on that can be found here:
http://forum.ppcgeeks.com/showthread...light=pagepool