Memory Lane Jr 2 is an upgraded Jr- a more powerful microprocessor. Longer delay times and a very cool new but as of yet unnamed 'ambient' algorithm... sort of delay, sort of reverb, it's VERY cool sounding.
It would be cool if it did it only in one mode. I really like the infinite repeats thing it does with the feedback on full. It's different and can sound very very cool at the end of a song, instead of oscillating.