The Sony M10 came out in 2010, or so. It deserves continued attention. It's a little thicker than an iPhone and comes with 4GB internal memory and a microSD/Memory Stick Micro™ (M2™) slot for expanded memory. It fits comfortably in the hand.
I was able to work it immediately. After inserting two AA batteries and holding down the power button, the M10 sprang to life, indicating the sample rate and bit depth, amount of recording time left and that it was in STOP mode. Hitting the REC button put the M10 instantly into record-ready with the yellow back-lit PAUSE button flashing and meters showing level. I tapped the PAUSE button, and was recording. Nice.
Applications: Recording audio anywhere.
Features: Dual, on board condenser omnis, discrete record level, easy access to most controls, multiple sample and bit rates of MP3 and .WAV