Ok, last response for me on this. Let's compare the Mobile AMD 64 2800+ to Intel's Pm 1.8 (keeping in mind, they are still only 32 bit.)
SiSoft Sandra Arithmetic Benchmark:
Mobile AMD 64 2800+ 1.83ghz: ALU 8285 MIPS / FPU iSSE2 2846/3711 MFLOPS
Intel Pentium M 1.8ghz: ALU 7747 MIPS / FPU iSSE2 2499/3198 MFLOPS
SiSoft Sandra Multimedia Benchmark:
Mobile AMD 54 2800+ 1.83ghz: Integer x4 aEMMX/aSSE 17201 it/s
Floating-Point x4 iSSE2 18441 it/s
Intel Pentium M 1.8ghz: Integer x4 iSSE 17100 it/s
Floating-Point x4 iSSE2 18868 it/s
Summary:
The Pentium M 1.8 holds it's own against the bottom of the line mobile 64 from AMD. Being only a 32-bit processor, it keeps up with the AMD 64, falling short in some tests and keeping up in others. So it is simply a matter of prefernce in your chip manufacturers, as both perform well in their own right. Do you prefer the expandability of the 64-bit processor but a shorter battery life? Or do you prefer the last of dieing breed, the 32-bit processor, but relish the incredible batter life? It's your choice, no one else's, and it's your computer, no one else's. And as long as you're like me, you're happier with your choice and your computer than you are with anyone else's.
(Beer anybody?

)