I have Tivoli PAL and SongBook too. I prefer SongBook for portable use, since it has removable batteries (6xAA). You actually need a screwdriver or leatherman to open the batterybox, but it probably opens with a coin too (haven't actually tried). There is no big difference with sound quality between these two, I think those both have the same speaker?
Radios are very good and sensitive at both models, but PAL could have some issues with AFC (Automatic Frequency Control) if used in boat or any other moving vehicle (if it moves, it can change channels automatically, if two channels are very close frequency). I actually can change PAL's channel in my house just for moving it to different location (about 1 meter dictance only), without using the tuning dial. Thats because AFC locks the station automatically for best reception, and if two channels are very close, it just can't decide.

Anyway, both radios are very good, and I would recommend them if You like good sound with reasonable size. And nice colors too.
