Rio Forge Sport (512 MB) MP3 Player

After a short time with an MPIO (sucks) I stepped up to the Rio Forge 512.
My requirements were something small, all flash (SD media), ease of operation and good sound quality.
I have read reviews that knocked this thing because it frequently "shut off" at random. It does this when battery gets low, and batteries do not last the listed spec of "Up to 20 hours of battery life". It might come close if you only use the radio since this would obviously require less power. But you can count on getting 10-12 hours on a single AAA battery using the embedded or SD flash memory. I bought a 1GB SD card and with my internal 512MB I have more than enough music for my work outs, dirt bike rides and snow skiing sessions.
Ease of use? If you can't navigate the menus on this thing then you're probably not even able to read this review... they're simple!
The arm band, belt clip and size make this as portable as anything out there.
The Rio met all my requiements plus I get AAA battery compatibility (that was huge and I never even considered this as a plus when looking to buy). I have friends that need to recharge built-in bats... sucks to be them. I can stop at a 7-11 and be back in business.
If you want small, portable, easy to use, SD compatible, AAA power, good battery life and a great sound (improves with aftermarket phones), this is your baby.