I agree with you - I do not understand the silly trend to have larger and larger phone screens. It just seems silly to make phones with huge screens, GPS, bluetooth, wifi, 4G, video, hi-end cameras and a battery that can't last a day of normal use. There is nothing worse than sitting in a business meeting late in the afternoon, and suddenly my fancy phone lets loose with an obnoxious squonk that the battery is low - and I can't understand why phone mfrs won't let you disable the low-battery sound.
Because everyone and their mother needs to be informed that your power-inefficient phone needed more juice to continue being more inefficient.
I wonder if Apple's and the myriad of Android manufacturers' phones have a low power mode that it switches to automatically? It would be funny and weird if they don't have a lower power state, where they turn of 3G/LTE and only EDGE, turn off GPS, etc. of more power-hungry features.
And for me personally, 4.3" is the maximum screen size I'm willing to live with; 4" is my ideal spot. So theoretically, if I want an Android phone that's 'audiophile-grade' the 4-Core would actually be a great fit.