I will say THIS about the Jean-Pauls: I would take a used model of any of the modern ones above to buying a new one of these.
HOWEVER...for folks who just feel buying new is what they wanna do (and there are some valid reasons including warranty and ease of purchase)....the Jean-Paul is NOT a piece of crap (which one might expect them to be given their price point).
I have had a chance to service two....I was hoping to HATE them, assuming they were just another in a line of cheapo chinese horns which were claiming the sky. It means little to me that players went out and bought them and even reviewed them favorably...because players are not techs, and it's the tech review which counts.
So...they ARE actually better-built than I expected. That is what I will say about them positively. I was pleasantly surprised in their build quality. Absent were a number of the usual budget chinese fare problems...key play, badly fitted/sized springs, bad screw pivots, very soft keys. Ergos and action were OK. Blowing response was pretty free. Intonation was OK.
Both had had significant playing use for a good year with no servicing, neither were leaking dramatically...suggesting they hold their regulation OK.
The pads weren't great, but not horrible. I mean they sealed fine, they just seemed low-shelf. The strap eyelets are weak...on both there was significant wear although the horns were only a year or so old.
Their tone is nothing to write home about, I think a Yama student or Jupe student has a significantly better tone.
BUT it wasn't 'a bad sax'. The only other offering of reputed quality in so cheap a price is probably something from Kessler, and the latter is a tad more expensive.
It has been pointed out to me that one online retailer has brand-new Buffet 100's for under $800...which is crazy ...since a year ago the cheapest price for one was $1200...and having serviced and refurbed a dozen now over the past 3 years, they are really a $1600 alto as far as quality goes.
So...if one has $800, then get the Buffet.... not the JP...but if one only wants to spend $550-ish and they insist on new....it's not a dumb purchase.