I'll echo the comments here. The Original Planet was a fine player and is still a steal at its used price. The Jupiter offers greater detail, greater extension. greater inner detail,m and far better soundstaging. In addition each note has a natural weight to it. Bass response is much much better in the Jupiter. If you like the Rega sound which is darker, snmoother, and non-analytical then the jupiter will be a definite improvement. I always tel lmy non-audiophile friends to look at Rega when they ask me for advice. The gear is well priced, looks nice, and sounds loads beter than anything in its price range, save a tie with Musical Fidelity which sounds different but not better.
Best
Vik
Best
Vik