Hello All, I remember years ago, when I bought a Sanyo M4440 new, it was 1981. I was riding in a noisy train, listening to a cassette, really loud music. Then I hit the "TALK" Line and suddenly it was like having BIONIC EARS...I could hear peoples conversations throughout the train, and they had no clue...thought I was listening to music. Later I sold the Sanyo, and I bought a Toshiba KT-S1 with FM Radio Module. This one also had a TALK Line...I dont remember it well though. My question is this.....Are all TALK Lines Equal in performance?? Do some have more sensitive Mic. or Have Longer or Better Range, for Hearing when TALK Button is engaged?? How would the Toshiba KT-S1 TALK Line compare to the Sanyo M4440 TALK Line in Sound Amplification, or Range/Loudness of Hearing when Button is Pressed?? Thank You, I appreciate any help on this. As I am in the process of buying a new Walkman with TALK LINE.. Thank You for any input, Ray