Amplifier power output has never been something that was really comparable between different players. The A35 is 35mW and it's only very slightly louder at maximum (if at all) than my NH1, which has 10mW (hacked to remove the European volume cap).
I'm about the install the 1.10 firmware version and I'm glad to read that it improves responsiveness of the screen as that bugs me, as does the slow response of pressing the side buttons.
What is also bothering me is the power management. If I turn the player off completely it takes ages to start up and create the database (even if it hasn't been plugged into a computer and there is therefore no need to re-make the database). If I leave it on but not playing then the battery dies. The other day I had around 45 minutes before I left for work (a commute of a little over an hour) and by pure chance I decided to turn on the player and the battery bar was flashing! I had left it with two bars the day before. There is no way that the player has the battery life claimed by Sony and they really should make a firmware update to either add an idle mode that doesn't eat the battery power or to speed up the boot process.