Get a JB4. The JB2 is outdated as hell(you can't even buy one new from BMS AFAIK.) As far as safety goes: all currently available big name tunes are very safe and very reliable, including the juice boxes.
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne