My opinion is yes. The "P" variant newer CPU, faster, etc. Radios might be the same but the engine is next gen.....
Today on Amazon the price difference is more than this. They are dumping the non "P" version.
Folks will always say "you won't notice the...."
Which is probably true.
However I will always go with or wait till I can afford the more powerful CPU. Its not 1 ghz as compared to 1.2ghz. Its almost twice as fast. 1 compared to 1.8. Wish the "P" was quad core too.
I tried the quad core tri band TPLink. It was flakey. Most of the other quad cores are AX.